#31397D#31397D

#31397D is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.7% C 0.114 H 274.5°. Best body text is #FFFFFF at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#31397D
RGB	rgb(49, 57, 125)
HSL	hsl(234, 44%, 34%)
HSV	hsv(234, 61%, 49%)
CMYK	cmyk(60.8%, 54.4%, 0%, 51%)
CIE-LAB	lab(26.90, 18.81, -39.79)
CIE-LCH	lch(26.90, 44.01, 295.30°)
OKLab	oklab(37.71% 0.009 -0.1139)
OKLCH	oklch(37.71% 0.114 274.5)
XYZ	xyz(6.4302, 5.0594, 20.0358)
Luminance	0.0506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31397D #7D7531

analogous

#315F7D #31397D #4F317D

triadic

#31397D #7D3139 #397D31

tetradic

#31397D #7D315F #7D7531 #317D4F

square

#31397D #7D315F #7D7531 #317D4F

split-complementary

#31397D #7D4F31 #5F7D31

monochromatic

#0F1125 #202551 #31397D #424DA9 #666FC3

Accessibility & contrast

On white

10.44

#31397D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#31397D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31397D

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31397D	#FFFFFF	#000000	##FFFFFF
##31397D	1.00	10.44	2.01	10.44
#FFFFFF	10.44	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11437F

Deuteranopia (green-blind)

#003C7C

Tritanopia (blue-blind)

#004955

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #31397d;
/* rgb */ color: rgb(49, 57, 125);
/* oklch */ color: oklch(37.7% 0.114 274.5);

Tailwind

colors: {
  custom: {
    50: '#716fa3',
    500: '#31397d',
    950: '#000000',
  },
}

SCSS

$custom: #31397d;
$custom-light: #716fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#31397d",
  "rgb": {
    "r": 49,
    "g": 57,
    "b": 125
  },
  "hsl": {
    "h": 233.684,
    "s": 43.678,
    "l": 34.118
  },
  "oklch": {
    "l": 0.37713,
    "c": 0.11427,
    "h": 274.5
  },
  "luminance": 0.0506
}

Semantic roles & 50–950 ramp

primary

#31397D

secondary

#AAA260

accent

#C654D3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #31397D

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

Preview Lab → · Contrast checker → · Palette generator →