#031731#031731

#031731 is a very dark, muted cyan. Relative luminance 0.009; OKLCH L 20.5% C 0.058 H 255.0°. Best body text is #FFFFFF at 17.94:1 contrast (WCAG AA passes).

Color values

HEX	#031731
RGB	rgb(3, 23, 49)
HSL	hsl(214, 88%, 10%)
HSV	hsv(214, 94%, 19%)
CMYK	cmyk(93.9%, 53.1%, 0%, 80.8%)
CIE-LAB	lab(7.71, 3.50, -19.67)
CIE-LCH	lch(7.71, 19.98, 280.08°)
OKLab	oklab(20.53% -0.0151 -0.0564)
OKLCH	oklch(20.53% 0.058 255)
XYZ	xyz(0.8981, 0.8538, 3.0226)
Luminance	0.0085 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#031731 #311D03

analogous

#032E31 #031731 #060331

triadic

#031731 #310317 #173103

tetradic

#031731 #31032E #311D03 #033106

square

#031731 #31032E #311D03 #033106

split-complementary

#031731 #310603 #2E3103

monochromatic

#020E1D #020E1D #031731 #07326B #0A4DA4

Accessibility & contrast

On white

17.94

#031731 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#031731 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #031731

17.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##031731	#FFFFFF	#000000	##FFFFFF
##031731	1.00	17.94	1.17	17.94
#FFFFFF	17.94	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#091932

Deuteranopia (green-blind)

#021530

Tritanopia (blue-blind)

#001D21

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #031731;
/* rgb */ color: rgb(3, 23, 49);
/* oklch */ color: oklch(20.5% 0.058 255.0);

Tailwind

colors: {
  custom: {
    50: '#4b5369',
    500: '#031731',
    950: '#000000',
  },
}

SCSS

$custom: #031731;
$custom-light: #4b5369;
$custom-dark: #000000;

JSON

{
  "hex": "#031731",
  "rgb": {
    "r": 3,
    "g": 23,
    "b": 49
  },
  "hsl": {
    "h": 213.913,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.20528,
    "c": 0.05843,
    "h": 255
  },
  "luminance": 0.00854
}

Semantic roles & 50–950 ramp

primary

#031731

secondary

#744E1B

accent

#A229FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010206

muted

#77787A

Preview Lab

Preview with #031731

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

Preview Lab → · Contrast checker → · Palette generator →