#313D89#313D89

#313D89 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.5% C 0.127 H 272.5°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#313D89
RGB	rgb(49, 61, 137)
HSL	hsl(232, 47%, 36%)
HSV	hsv(232, 64%, 54%)
CMYK	cmyk(64.2%, 55.5%, 0%, 46.3%)
CIE-LAB	lab(28.89, 20.47, -44.06)
CIE-LCH	lch(28.89, 48.59, 294.92°)
OKLab	oklab(39.49% 0.0055 -0.1265)
OKLCH	oklch(39.49% 0.127 272.5)
XYZ	xyz(7.4492, 5.7960, 24.3882)
Luminance	0.0580 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D89 #897D31

analogous

#316989 #313D89 #513189

triadic

#313D89 #89313D #3D8931

tetradic

#313D89 #893169 #897D31 #318951

square

#313D89 #893169 #897D31 #318951

split-complementary

#313D89 #895131 #698931

monochromatic

#11152F #21295C #313D89 #4151B6 #6B78CA

Accessibility & contrast

On white

9.72

#313D89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#313D89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D89

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D89	#FFFFFF	#000000	##FFFFFF
##313D89	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#08488C

Deuteranopia (green-blind)

#004087

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #313d89;
/* rgb */ color: rgb(49, 61, 137);
/* oklch */ color: oklch(39.5% 0.127 272.5);

Tailwind

colors: {
  custom: {
    50: '#7372ac',
    500: '#313d89',
    950: '#000000',
  },
}

SCSS

$custom: #313d89;
$custom-light: #7372ac;
$custom-dark: #000000;

JSON

{
  "hex": "#313d89",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 137
  },
  "hsl": {
    "h": 231.818,
    "s": 47.312,
    "l": 36.471
  },
  "oklch": {
    "l": 0.39487,
    "c": 0.12658,
    "h": 272.5
  },
  "luminance": 0.05797
}

Semantic roles & 50–950 ramp

primary

#313D89

secondary

#B1A764

accent

#C551D7

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #313D89

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

Preview Lab → · Contrast checker → · Palette generator →