Darkslategray1
darkslategray1 · #97FFFF
HEX
#97FFFF
RGB
rgb(151, 255, 255)
CMYK
cmyk(41%, 0%, 0%, 0%)
HSL
hsl(180, 100%, 80%)
LAB
lab(94.0, -30.2, -9.5)
What is Darkslategray1?
Darkslategray1 is the darkslategray1 reference in the X11 named colors. Its sRGB value is #97FFFF (rgb 151, 255, 255). It sits in the cyan family. Historical X Window System color names — the numbered 1-4 lightness variants of the classic xorg-server rgb.txt palette. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Darkslategray1 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Darkslategray1
An 11-step tonal scale derived from Darkslategray1 (#97FFFF). Click any swatch to copy its HEX. Use these as a starting point for design tokens, hover states, and disabled states in a design system.
50
#F7FFFF
#F7FFFF
100
#EEFFFF
#EEFFFF
200
#DEFFFF
#DEFFFF
300
#CBFFFF
#CBFFFF
400
#B1FFFF
#B1FFFF
500
#97FFFF
#97FFFF
600
#80D9D9
#80D9D9
700
#62A6A6
#62A6A6
800
#447373
#447373
900
#264040
#264040
950
#121F1F
#121F1F
Lighter tints (mixed with white)
15%
#ACFFFF
30%
#BEFFFF
45%
#CEFFFF
60%
#DDFFFF
75%
#EBFFFF
Darker shades (mixed with black)
15%
#8CEDED
30%
#80DADA
45%
#73C4C4
60%
#63AAAA
75%
#4F8989
Color harmonies for Darkslategray1
Classic color-theory harmonies derived from rotating the hue of Darkslategray1. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#97FFFF
#97FFFF
#FF9999
#FF9999
Triadic
Three colors 120° apart
#97FFFF
#97FFFF
#FF99FF
#FF99FF
#FFFF99
#FFFF99
Analogous
Two neighbors ±30° on the wheel
#99FFCC
#99FFCC
#97FFFF
#97FFFF
#99CCFF
#99CCFF
Split-complementary
Base + two colors flanking its complement
#97FFFF
#97FFFF
#FF99CC
#FF99CC
#FFCC99
#FFCC99
Tetradic
Two complementary pairs
#97FFFF
#97FFFF
#9999FF
#9999FF
#FF9999
#FF9999
#FFFF99
#FFFF99
Square
Four colors evenly spaced 90° apart
#97FFFF
#97FFFF
#CC99FF
#CC99FF
#FF9999
#FF9999
#CCFF99
#CCFF99
Darkslategray1 in every color space
Full conversion of Darkslategray1 across the color spaces designers and developers actually use — including OKLCH (the perceptually-uniform space that powers Tailwind v4 and CSS Color Module Level 4) and HWB.
HEX
#97FFFF
RGB
rgb(151, 255, 255)
CMYK
cmyk(41%, 0%, 0%, 0%)
HSL
hsl(180, 100%, 80%)
HSV
hsv(180, 41%, 100%)
HWB
hwb(180 59% 0%)
CIE Lab
lab(94.0 -30.2 -9.5)
OKLCH
oklch(93.7% 0.097 195.6)
XYZ (D65)
xyz(66.57, 85.31, 107.55)
Copy-ready code for Darkslategray1
Drop-in snippets for CSS, Tailwind, Sass, iOS Swift, and Android XML. Click the copy button on any snippet to put it on your clipboard.
CSS
color: #97FFFF;
background-color: #97FFFF;CSS variable
:root {
--color-darkslategray1: #97FFFF;
}Tailwind config
// tailwind.config.js
colors: {
'darkslategray1': '#97FFFF',
}Sass
$color-darkslategray1: #97FFFF;Swift UIColor
UIColor(red: 0.592, green: 1.000, blue: 1.000, alpha: 1.0)Android XML
<color name="darkslategray1">#97FFFF</color>Closest match in every color system
The nearest Darkslategray1 equivalent in every other color system on this site, ranked by ΔE2000 perceptual distance. Useful when translating between design-system, web-standard, and industrial color references.
Closest in X11 named colors
Top 6 ΔE2000-closest entries within the same collection.
Closest Pantone matches
Top 6 ΔE2000-closest Pantone references. Cross-system matching is approximate — see disclaimer.
Closest RAL Classic matches
Top 6 ΔE2000-closest RAL Classic references for industrial coating cross-reference.
RAL 6027
#84C3BE
Light green
RAL 6019
#BDECB6
Pastel green
RAL 9002
#E7EBDA
Grey white
RAL 9003
#F4F4F4
Signal white
RAL 9016
#F6F6F6
Traffic white
RAL 9010
#FFFFFF
Pure white
FAQ about Darkslategray1
What is the HEX code for Darkslategray1?
Darkslategray1 (darkslategray1) has the HEX code #97FFFF. In RGB it is rgb(151, 255, 255), and in CMYK it is cmyk(41%, 0%, 0%, 0%).
What is the OKLCH value of Darkslategray1?
Darkslategray1 converts to oklch(0.937 0.097 195.6). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Darkslategray1 accessible for body text?
Used as a background, Darkslategray1 has a contrast ratio of 18.06:1 with black text and 1.16:1 with white text. WCAG 2.1 AA requires 4.5:1 for normal text. The current recommendation is to use black text and verify in real UI context.
What is the closest Pantone to Darkslategray1?
The closest Pantone reference to Darkslategray1 by ΔE2000 perceptual distance is Pantone 304 C (#9CDBD9). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Darkslategray1?
The closest RAL Classic reference to Darkslategray1 by ΔE2000 distance is RAL 6027 (Light green, #84C3BE). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Darkslategray1?
The complementary color (180° opposite on the HSL color wheel) of Darkslategray1 is #FF9999. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
X11 named colors (xorg rgb.txt)
The historical X11 color name list shipped in the xorg-server rgb.txt file. Roughly 550 entries covering classic computing color names like 'PapayaWhip', 'MediumAquamarine', and 'DarkSlateGray'. Many CSS named colors originate here. Use as a reference for legacy and creative color names. Most modern CSS implementations accept these names directly.
- Source type
- derived
- Confidence
- high
- License
- MIT/X11 license (X Consortium)
- Last reviewed
- 2026-05-24
Workflow tags
X11 colors are sRGB digital values from a 1980s color system. For print, convert to a process-appropriate color and proof against substrate.