#313E87#313E87

#313E87 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.5% C 0.122 H 272.0°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#313E87
RGB	rgb(49, 62, 135)
HSL	hsl(231, 47%, 36%)
HSV	hsv(231, 64%, 53%)
CMYK	cmyk(63.7%, 54.1%, 0%, 47.1%)
CIE-LAB	lab(29.02, 19.06, -42.61)
CIE-LCH	lch(29.02, 46.68, 294.10°)
OKLab	oklab(39.54% 0.0044 -0.1222)
OKLCH	oklch(39.54% 0.122 272)
XYZ	xyz(7.3610, 5.8469, 23.6576)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313E87 #877A31

analogous

#316987 #313E87 #4F3187

triadic

#313E87 #87313E #3E8731

tetradic

#313E87 #873169 #877A31 #31874F

square

#313E87 #873169 #877A31 #31874F

split-complementary

#313E87 #874F31 #698731

monochromatic

#10152D #21295A #313E87 #4153B4 #6A78C9

Accessibility & contrast

On white

9.68

#313E87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#313E87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313E87

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313E87	#FFFFFF	#000000	##FFFFFF
##313E87	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11488A

Deuteranopia (green-blind)

#004185

Tritanopia (blue-blind)

#004F5C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #313e87;
/* rgb */ color: rgb(49, 62, 135);
/* oklch */ color: oklch(39.5% 0.122 272.0);

Tailwind

colors: {
  custom: {
    50: '#7273aa',
    500: '#313e87',
    950: '#000000',
  },
}

SCSS

$custom: #313e87;
$custom-light: #7273aa;
$custom-dark: #000000;

JSON

{
  "hex": "#313e87",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 135
  },
  "hsl": {
    "h": 230.93,
    "s": 46.739,
    "l": 36.078
  },
  "oklch": {
    "l": 0.39539,
    "c": 0.12225,
    "h": 272
  },
  "luminance": 0.05847
}

Semantic roles & 50–950 ramp

primary

#313E87

secondary

#B0A564

accent

#C251D6

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090810

muted

#7B7B7F

Preview Lab

Preview with #313E87

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

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