#011831#011831

#011831 is a very dark, muted cyan. Relative luminance 0.009; OKLCH L 20.7% C 0.058 H 251.5°. Best body text is #FFFFFF at 17.85:1 contrast (WCAG AA passes).

Color values

HEX	#011831
RGB	rgb(1, 24, 49)
HSL	hsl(211, 96%, 10%)
HSV	hsv(211, 98%, 19%)
CMYK	cmyk(98%, 51%, 0%, 80.8%)
CIE-LAB	lab(7.96, 2.23, -19.28)
CIE-LCH	lch(7.96, 19.41, 276.61°)
OKLab	oklab(20.69% -0.0185 -0.0553)
OKLCH	oklch(20.69% 0.058 251.5)
XYZ	xyz(0.8933, 0.8814, 3.0282)
Luminance	0.0088 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#011831 #311A01

analogous

#013031 #011831 #020131

triadic

#011831 #310118 #183101

tetradic

#011831 #310130 #311A01 #013102

square

#011831 #310130 #311A01 #013102

split-complementary

#011831 #310201 #303101

monochromatic

#010F1E #010F1E #011831 #02356D #0353A9

Accessibility & contrast

On white

17.85

#011831 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#011831 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #011831

17.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##011831	#FFFFFF	#000000	##FFFFFF
##011831	1.00	17.85	1.18	17.85
#FFFFFF	17.85	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B1A32

Deuteranopia (green-blind)

#031531

Tritanopia (blue-blind)

#001E22

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #011831;
/* rgb */ color: rgb(1, 24, 49);
/* oklch */ color: oklch(20.7% 0.058 251.5);

Tailwind

colors: {
  custom: {
    50: '#4a5469',
    500: '#011831',
    950: '#000000',
  },
}

SCSS

$custom: #011831;
$custom-light: #4a5469;
$custom-dark: #000000;

JSON

{
  "hex": "#011831",
  "rgb": {
    "r": 1,
    "g": 24,
    "b": 49
  },
  "hsl": {
    "h": 211.25,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.2069,
    "c": 0.05833,
    "h": 251.5
  },
  "luminance": 0.00881
}

Semantic roles & 50–950 ramp

primary

#011831

secondary

#774917

accent

#9829FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010206

muted

#77787A

Preview Lab

Preview with #011831

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

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