#312599#312599

#312599 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.8% C 0.178 H 277.7°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#312599
RGB	rgb(49, 37, 153)
HSL	hsl(246, 61%, 37%)
HSV	hsv(246, 76%, 60%)
CMYK	cmyk(68%, 75.8%, 0%, 40%)
CIE-LAB	lab(24.56, 41.29, -61.00)
CIE-LCH	lch(24.56, 73.66, 304.09°)
OKLab	oklab(36.76% 0.0238 -0.1762)
OKLCH	oklch(36.76% 0.178 277.7)
XYZ	xyz(7.6761, 4.2754, 30.5515)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312599 #8D9925

analogous

#255399 #312599 #6B2599

triadic

#312599 #993125 #259931

tetradic

#312599 #992553 #8D9925 #25996B

square

#312599 #992553 #8D9925 #25996B

split-complementary

#312599 #996B25 #539925

monochromatic

#110D36 #211968 #312599 #4131CA #6C60D9

Accessibility & contrast

On white

11.32

#312599 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#312599 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312599

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312599	#FFFFFF	#000000	##FFFFFF
##312599	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F9C

Deuteranopia (green-blind)

#003597

Tritanopia (blue-blind)

#00465D

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #312599;
/* rgb */ color: rgb(49, 37, 153);
/* oklch */ color: oklch(36.8% 0.178 277.7);

Tailwind

colors: {
  custom: {
    50: '#7862b8',
    500: '#312599',
    950: '#000000',
  },
}

SCSS

$custom: #312599;
$custom-light: #7862b8;
$custom-dark: #000000;

JSON

{
  "hex": "#312599",
  "rgb": {
    "r": 49,
    "g": 37,
    "b": 153
  },
  "hsl": {
    "h": 246.207,
    "s": 61.053,
    "l": 37.255
  },
  "oklch": {
    "l": 0.36763,
    "c": 0.17781,
    "h": 277.7
  },
  "luminance": 0.04276
}

Semantic roles & 50–950 ramp

primary

#312599

secondary

#B4BE5C

accent

#E444D4

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #312599

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

Preview Lab → · Contrast checker → · Palette generator →