#424F5B#424F5B

#424F5B is a dark, muted cyan. Relative luminance 0.075; OKLCH L 42.1% C 0.026 H 246.3°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#424F5B
RGB	rgb(66, 79, 91)
HSL	hsl(209, 16%, 31%)
HSV	hsv(209, 27%, 36%)
CMYK	cmyk(27.5%, 13.2%, 0%, 64.3%)
CIE-LAB	lab(32.93, -2.02, -8.73)
CIE-LCH	lch(32.93, 8.96, 256.96°)
OKLab	oklab(42.1% -0.0104 -0.0238)
OKLCH	oklch(42.1% 0.026 246.3)
XYZ	xyz(6.9305, 7.5053, 10.9790)
Luminance	0.0751 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424F5B #5B4E42

analogous

#425B5A #424F5B #42425B

triadic

#424F5B #5B424F #4F5B42

tetradic

#424F5B #5A425B #5B4E42 #425B42

square

#424F5B #5A425B #5B4E42 #425B42

split-complementary

#424F5B #5B4242 #5B5A42

monochromatic

#0F1114 #283038 #424F5B #5C6E7E #798C9E

Accessibility & contrast

On white

8.40

#424F5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#424F5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424F5B

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424F5B	#FFFFFF	#000000	##FFFFFF
##424F5B	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A4F5C

Deuteranopia (green-blind)

#474C5B

Tritanopia (blue-blind)

#3B5253

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #424f5b;
/* rgb */ color: rgb(66, 79, 91);
/* oklch */ color: oklch(42.1% 0.026 246.3);

Tailwind

colors: {
  custom: {
    50: '#778089',
    500: '#424f5b',
    950: '#000000',
  },
}

SCSS

$custom: #424f5b;
$custom-light: #778089;
$custom-dark: #000000;

JSON

{
  "hex": "#424f5b",
  "rgb": {
    "r": 66,
    "g": 79,
    "b": 91
  },
  "hsl": {
    "h": 208.8,
    "s": 15.924,
    "l": 30.784
  },
  "oklch": {
    "l": 0.42096,
    "c": 0.026,
    "h": 246.3
  },
  "luminance": 0.07506
}

Semantic roles & 50–950 ramp

primary

#424F5B

secondary

#8A7C6F

accent

#926FB9

background

#F7F7F8

surface

#EDEEF0

border

#C8C9CB

text

#080A0B

muted

#7B7C7C

Preview Lab

Preview with #424F5B

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

Preview Lab → · Contrast checker → · Palette generator →