#42545E#42545E

#42545E is a dark, muted cyan. Relative luminance 0.083; OKLCH L 43.5% C 0.028 H 232.6°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#42545E
RGB	rgb(66, 84, 94)
HSL	hsl(201, 18%, 31%)
HSV	hsv(201, 30%, 37%)
CMYK	cmyk(29.8%, 10.6%, 0%, 63.1%)
CIE-LAB	lab(34.61, -4.31, -8.09)
CIE-LCH	lch(34.61, 9.16, 241.96°)
OKLab	oklab(43.46% -0.0169 -0.0221)
OKLCH	oklch(43.46% 0.028 232.6)
XYZ	xyz(7.4369, 8.3067, 11.7990)
Luminance	0.0831 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42545E #5E4C42

analogous

#425E5A #42545E #42465E

triadic

#42545E #5E4254 #545E42

tetradic

#42545E #5A425E #5E4C42 #465E42

square

#42545E #5A425E #5E4C42 #465E42

split-complementary

#42545E #5E4246 #5E5A42

monochromatic

#101416 #29343A #42545E #5B7482 #7993A1

Accessibility & contrast

On white

7.89

#42545E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#42545E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42545E

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42545E	#FFFFFF	#000000	##FFFFFF
##42545E	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F535F

Deuteranopia (green-blind)

#4B505E

Tritanopia (blue-blind)

#395757

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #42545e;
/* rgb */ color: rgb(66, 84, 94);
/* oklch */ color: oklch(43.5% 0.028 232.6);

Tailwind

colors: {
  custom: {
    50: '#77848b',
    500: '#42545e',
    950: '#000000',
  },
}

SCSS

$custom: #42545e;
$custom-light: #77848b;
$custom-dark: #000000;

JSON

{
  "hex": "#42545e",
  "rgb": {
    "r": 66,
    "g": 84,
    "b": 94
  },
  "hsl": {
    "h": 201.429,
    "s": 17.5,
    "l": 31.373
  },
  "oklch": {
    "l": 0.43461,
    "c": 0.0278,
    "h": 232.6
  },
  "luminance": 0.08307
}

Semantic roles & 50–950 ramp

primary

#42545E

secondary

#8D796E

accent

#896EBA

background

#F7F8F8

surface

#EDEFF0

border

#C8CACB

text

#080A0C

muted

#7B7C7D

Preview Lab

Preview with #42545E

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →