#031B33#031B33

#031B33 is a very dark, muted cyan. Relative luminance 0.010; OKLCH L 21.8% C 0.056 H 250.6°. Best body text is #FFFFFF at 17.38:1 contrast (WCAG AA passes).

Color values

HEX	#031B33
RGB	rgb(3, 27, 51)
HSL	hsl(210, 89%, 11%)
HSV	hsv(210, 94%, 20%)
CMYK	cmyk(94.1%, 47.1%, 0%, 80%)
CIE-LAB	lab(9.34, 1.32, -18.54)
CIE-LCH	lch(9.34, 18.58, 274.07°)
OKLab	oklab(21.85% -0.0186 -0.053)
OKLCH	oklch(21.85% 0.056 250.6)
XYZ	xyz(1.0268, 1.0421, 3.2784)
Luminance	0.0104 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031B33 #331B03

analogous

#033333 #031B33 #030333

triadic

#031B33 #33031B #1B3303

tetradic

#031B33 #330333 #331B03 #033303

square

#031B33 #330333 #331B03 #033303

split-complementary

#031B33 #330303 #333303

monochromatic

#020F1D #020F1D #031B33 #063A6D #0A58A7

Accessibility & contrast

On white

17.38

#031B33 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#031B33 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031B33

17.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031B33	#FFFFFF	#000000	##FFFFFF
##031B33	1.00	17.38	1.21	17.38
#FFFFFF	17.38	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F1D34

Deuteranopia (green-blind)

#071833

Tritanopia (blue-blind)

#002124

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #031b33;
/* rgb */ color: rgb(3, 27, 51);
/* oklch */ color: oklch(21.8% 0.056 250.6);

Tailwind

colors: {
  custom: {
    50: '#4c566b',
    500: '#031b33',
    950: '#000000',
  },
}

SCSS

$custom: #031b33;
$custom-light: #4c566b;
$custom-dark: #000000;

JSON

{
  "hex": "#031b33",
  "rgb": {
    "r": 3,
    "g": 27,
    "b": 51
  },
  "hsl": {
    "h": 210,
    "s": 88.889,
    "l": 10.588
  },
  "oklch": {
    "l": 0.21845,
    "c": 0.05616,
    "h": 250.6
  },
  "luminance": 0.01042
}

Semantic roles & 50–950 ramp

primary

#031B33

secondary

#76491C

accent

#9429FF

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#010306

muted

#77787A

Preview Lab

Preview with #031B33

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

Preview Lab → · Contrast checker → · Palette generator →