#31376B#31376B

#31376B is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.9% C 0.089 H 276.0°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#31376B
RGB	rgb(49, 55, 107)
HSL	hsl(234, 37%, 31%)
HSV	hsv(234, 54%, 42%)
CMYK	cmyk(54.2%, 48.6%, 0%, 58%)
CIE-LAB	lab(25.10, 13.71, -31.25)
CIE-LCH	lch(25.10, 34.12, 293.69°)
OKLab	oklab(35.95% 0.0093 -0.0888)
OKLCH	oklch(35.95% 0.089 276)
XYZ	xyz(5.2858, 4.4466, 14.4868)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31376B #6B6531

analogous

#31546B #31376B #48316B

triadic

#31376B #6B3137 #376B31

tetradic

#31376B #6B3154 #6B6531 #316B48

square

#31376B #6B3154 #6B6531 #316B48

split-complementary

#31376B #6B4831 #546B31

monochromatic

#0B0C17 #1E2141 #31376B #444D95 #6069B6

Accessibility & contrast

On white

11.11

#31376B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#31376B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31376B

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31376B	#FFFFFF	#000000	##FFFFFF
##31376B	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#203E6D

Deuteranopia (green-blind)

#1B396A

Tritanopia (blue-blind)

#18424B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #31376b;
/* rgb */ color: rgb(49, 55, 107);
/* oklch */ color: oklch(35.9% 0.089 276.0);

Tailwind

colors: {
  custom: {
    50: '#6e6d96',
    500: '#31376b',
    950: '#000000',
  },
}

SCSS

$custom: #31376b;
$custom-light: #6e6d96;
$custom-dark: #000000;

JSON

{
  "hex": "#31376b",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 107
  },
  "hsl": {
    "h": 233.793,
    "s": 37.179,
    "l": 30.588
  },
  "oklch": {
    "l": 0.3595,
    "c": 0.08934,
    "h": 276
  },
  "luminance": 0.04447
}

Semantic roles & 50–950 ramp

primary

#31376B

secondary

#9C955C

accent

#C15BCD

background

#F6F6F9

surface

#ECEBF2

border

#C7C6CC

text

#07070D

muted

#7A7A7E

Preview Lab

Preview with #31376B

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

Preview Lab → · Contrast checker → · Palette generator →