#31369B#31369B

#31369B is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.7% C 0.161 H 274.2°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#31369B
RGB	rgb(49, 54, 155)
HSL	hsl(237, 52%, 40%)
HSV	hsv(237, 68%, 61%)
CMYK	cmyk(68.4%, 65.2%, 0%, 39.2%)
CIE-LAB	lab(28.53, 31.66, -55.71)
CIE-LCH	lch(28.53, 64.07, 299.61°)
OKLab	oklab(39.68% 0.0117 -0.1607)
OKLCH	oklch(39.68% 0.161 274.2)
XYZ	xyz(8.5002, 5.6571, 31.6480)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31369B #9B9631

analogous

#316B9B #31369B #61319B

triadic

#31369B #9B3136 #369B31

tetradic

#31369B #9B316B #9B9631 #319B61

square

#31369B #9B316B #9B9631 #319B61

split-complementary

#31369B #9B6131 #6B9B31

monochromatic

#14163E #22266D #31369B #454BC4 #7378D3

Accessibility & contrast

On white

9.85

#31369B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#31369B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31369B

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31369B	#FFFFFF	#000000	##FFFFFF
##31369B	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489E

Deuteranopia (green-blind)

#003F99

Tritanopia (blue-blind)

#005063

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #31369b;
/* rgb */ color: rgb(49, 54, 155);
/* oklch */ color: oklch(39.7% 0.161 274.2);

Tailwind

colors: {
  custom: {
    50: '#776db9',
    500: '#31369b',
    950: '#000000',
  },
}

SCSS

$custom: #31369b;
$custom-light: #776db9;
$custom-dark: #000000;

JSON

{
  "hex": "#31369b",
  "rgb": {
    "r": 49,
    "g": 54,
    "b": 155
  },
  "hsl": {
    "h": 237.17,
    "s": 51.961,
    "l": 40
  },
  "oklch": {
    "l": 0.39676,
    "c": 0.16116,
    "h": 274.2
  },
  "luminance": 0.05658
}

Semantic roles & 50–950 ramp

primary

#31369B

secondary

#BBB76D

accent

#D54CDB

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #31369B

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

Preview Lab → · Contrast checker → · Palette generator →