#313A8D#313A8D

#313A8D is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.2% C 0.136 H 273.6°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#313A8D
RGB	rgb(49, 58, 141)
HSL	hsl(234, 48%, 37%)
HSV	hsv(234, 65%, 55%)
CMYK	cmyk(65.2%, 58.9%, 0%, 44.7%)
CIE-LAB	lab(28.38, 23.96, -47.36)
CIE-LCH	lch(28.38, 53.08, 296.84°)
OKLab	oklab(39.2% 0.0086 -0.1362)
OKLCH	oklch(39.2% 0.136 273.6)
XYZ	xyz(7.5858, 5.6015, 25.8756)
Luminance	0.0560 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A8D #8D8431

analogous

#31688D #313A8D #56318D

triadic

#313A8D #8D313A #3A8D31

tetradic

#313A8D #8D3168 #8D8431 #318D56

square

#313A8D #8D3168 #8D8431 #318D56

split-complementary

#313A8D #8D5631 #688D31

monochromatic

#111532 #212760 #313A8D #414DBA #6C76CC

Accessibility & contrast

On white

9.90

#313A8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#313A8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A8D

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A8D	#FFFFFF	#000000	##FFFFFF
##313A8D	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004790

Deuteranopia (green-blind)

#003F8B

Tritanopia (blue-blind)

#004E5D

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #313a8d;
/* rgb */ color: rgb(49, 58, 141);
/* oklch */ color: oklch(39.2% 0.136 273.6);

Tailwind

colors: {
  custom: {
    50: '#7470af',
    500: '#313a8d',
    950: '#000000',
  },
}

SCSS

$custom: #313a8d;
$custom-light: #7470af;
$custom-dark: #000000;

JSON

{
  "hex": "#313a8d",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 141
  },
  "hsl": {
    "h": 234.13,
    "s": 48.421,
    "l": 37.255
  },
  "oklch": {
    "l": 0.39204,
    "c": 0.13646,
    "h": 273.6
  },
  "luminance": 0.05602
}

Semantic roles & 50–950 ramp

primary

#313A8D

secondary

#B4AC66

accent

#CB50D8

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #313A8D

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

Preview Lab → · Contrast checker → · Palette generator →