#313C79#313C79

#313C79 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.1% C 0.104 H 272.8°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#313C79
RGB	rgb(49, 60, 121)
HSL	hsl(231, 42%, 33%)
HSV	hsv(231, 60%, 47%)
CMYK	cmyk(59.5%, 50.4%, 0%, 52.5%)
CIE-LAB	lab(27.48, 15.30, -36.35)
CIE-LCH	lch(27.48, 39.44, 292.83°)
OKLab	oklab(38.06% 0.0051 -0.1038)
OKLCH	oklch(38.06% 0.104 272.8)
XYZ	xyz(6.3325, 5.2647, 18.7679)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313C79 #796E31

analogous

#316079 #313C79 #4A3179

triadic

#313C79 #79313C #3C7931

tetradic

#313C79 #793160 #796E31 #31794A

square

#313C79 #793160 #796E31 #31794A

split-complementary

#313C79 #794A31 #607931

monochromatic

#0E1122 #1F264D #313C79 #4352A5 #6472C0

Accessibility & contrast

On white

10.23

#313C79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#313C79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313C79

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313C79	#FFFFFF	#000000	##FFFFFF
##313C79	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E447B

Deuteranopia (green-blind)

#133E78

Tritanopia (blue-blind)

#034A54

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313c79;
/* rgb */ color: rgb(49, 60, 121);
/* oklch */ color: oklch(38.1% 0.104 272.8);

Tailwind

colors: {
  custom: {
    50: '#7071a0',
    500: '#313c79',
    950: '#000000',
  },
}

SCSS

$custom: #313c79;
$custom-light: #7071a0;
$custom-dark: #000000;

JSON

{
  "hex": "#313c79",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 121
  },
  "hsl": {
    "h": 230.833,
    "s": 42.353,
    "l": 33.333
  },
  "oklch": {
    "l": 0.38056,
    "c": 0.1039,
    "h": 272.8
  },
  "luminance": 0.05265
}

Semantic roles & 50–950 ramp

primary

#313C79

secondary

#A89C5E

accent

#BF56D2

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#08070F

muted

#7B7A7E

Preview Lab

Preview with #313C79

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

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