#313C88#313C88

#313C88 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.2% C 0.126 H 272.9°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#313C88
RGB	rgb(49, 60, 136)
HSL	hsl(232, 47%, 36%)
HSV	hsv(232, 64%, 53%)
CMYK	cmyk(64%, 55.9%, 0%, 46.7%)
CIE-LAB	lab(28.54, 20.78, -44.01)
CIE-LCH	lch(28.54, 48.67, 295.28°)
OKLab	oklab(39.2% 0.0065 -0.1263)
OKLCH	oklch(39.2% 0.126 272.9)
XYZ	xyz(7.3249, 5.6617, 23.9946)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C88 #887D31

analogous

#316888 #313C88 #523188

triadic

#313C88 #88313C #3C8831

tetradic

#313C88 #883168 #887D31 #318852

square

#313C88 #883168 #887D31 #318852

split-complementary

#313C88 #885231 #688831

monochromatic

#11142E #21285B #313C88 #4150B5 #6A76C9

Accessibility & contrast

On white

9.85

#313C88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#313C88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C88

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C88	#FFFFFF	#000000	##FFFFFF
##313C88	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)

#06478B

Deuteranopia (green-blind)

#004086

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #313c88;
/* rgb */ color: rgb(49, 60, 136);
/* oklch */ color: oklch(39.2% 0.126 272.9);

Tailwind

colors: {
  custom: {
    50: '#7371ab',
    500: '#313c88',
    950: '#000000',
  },
}

SCSS

$custom: #313c88;
$custom-light: #7371ab;
$custom-dark: #000000;

JSON

{
  "hex": "#313c88",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 136
  },
  "hsl": {
    "h": 232.414,
    "s": 47.027,
    "l": 36.275
  },
  "oklch": {
    "l": 0.39201,
    "c": 0.12648,
    "h": 272.9
  },
  "luminance": 0.05662
}

Semantic roles & 50–950 ramp

primary

#313C88

secondary

#B1A764

accent

#C651D7

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #313C88

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

Preview Lab → · Contrast checker → · Palette generator →