#313E88#313E88

#313E88 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.6% C 0.124 H 272.1°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#313E88
RGB	rgb(49, 62, 136)
HSL	hsl(231, 47%, 36%)
HSV	hsv(231, 64%, 53%)
CMYK	cmyk(64%, 54.4%, 0%, 46.7%)
CIE-LAB	lab(29.10, 19.43, -43.11)
CIE-LCH	lch(29.10, 47.29, 294.26°)
OKLab	oklab(39.62% 0.0044 -0.1236)
OKLCH	oklch(39.62% 0.124 272.1)
XYZ	xyz(7.4317, 5.8752, 24.0302)
Luminance	0.0588 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E88 #887B31

analogous

#316A88 #313E88 #503188

triadic

#313E88 #88313E #3E8831

tetradic

#313E88 #88316A #887B31 #318850

square

#313E88 #88316A #887B31 #318850

split-complementary

#313E88 #885031 #6A8831

monochromatic

#11152E #21295B #313E88 #4153B5 #6A78C9

Accessibility & contrast

On white

9.65

#313E88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#313E88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E88

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E88	#FFFFFF	#000000	##FFFFFF
##313E88	1.00	9.65	2.18	9.65
#FFFFFF	9.65	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F498B

Deuteranopia (green-blind)

#004186

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #313e88;
/* rgb */ color: rgb(49, 62, 136);
/* oklch */ color: oklch(39.6% 0.124 272.1);

Tailwind

colors: {
  custom: {
    50: '#7373ab',
    500: '#313e88',
    950: '#000000',
  },
}

SCSS

$custom: #313e88;
$custom-light: #7373ab;
$custom-dark: #000000;

JSON

{
  "hex": "#313e88",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 136
  },
  "hsl": {
    "h": 231.034,
    "s": 47.027,
    "l": 36.275
  },
  "oklch": {
    "l": 0.39617,
    "c": 0.12373,
    "h": 272.1
  },
  "luminance": 0.05876
}

Semantic roles & 50–950 ramp

primary

#313E88

secondary

#B1A564

accent

#C351D7

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #313E88

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

Preview Lab → · Contrast checker → · Palette generator →