#313D78#313D78

#313D78 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.2% C 0.101 H 272.2°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#313D78
RGB	rgb(49, 61, 120)
HSL	hsl(230, 42%, 33%)
HSV	hsv(230, 59%, 47%)
CMYK	cmyk(59.2%, 49.2%, 0%, 52.9%)
CIE-LAB	lab(27.70, 14.25, -35.36)
CIE-LCH	lch(27.70, 38.12, 291.96°)
OKLab	oklab(38.2% 0.0038 -0.1009)
OKLCH	oklch(38.2% 0.101 272.2)
XYZ	xyz(6.3244, 5.3461, 18.4643)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D78 #786C31

analogous

#316078 #313D78 #483178

triadic

#313D78 #78313D #3D7831

tetradic

#313D78 #783160 #786C31 #317848

square

#313D78 #783160 #786C31 #317848

split-complementary

#313D78 #784831 #607831

monochromatic

#0E1121 #1F274D #313D78 #4353A3 #6473C0

Accessibility & contrast

On white

10.15

#313D78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#313D78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D78

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D78	#FFFFFF	#000000	##FFFFFF
##313D78	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21457A

Deuteranopia (green-blind)

#173E77

Tritanopia (blue-blind)

#054A54

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313d78;
/* rgb */ color: rgb(49, 61, 120);
/* oklch */ color: oklch(38.2% 0.101 272.2);

Tailwind

colors: {
  custom: {
    50: '#70729f',
    500: '#313d78',
    950: '#000000',
  },
}

SCSS

$custom: #313d78;
$custom-light: #70729f;
$custom-dark: #000000;

JSON

{
  "hex": "#313d78",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 120
  },
  "hsl": {
    "h": 229.859,
    "s": 42.012,
    "l": 33.137
  },
  "oklch": {
    "l": 0.38204,
    "c": 0.10093,
    "h": 272.2
  },
  "luminance": 0.05347
}

Semantic roles & 50–950 ramp

primary

#313D78

secondary

#A79B5E

accent

#BD56D2

background

#F7F6F9

surface

#EDECF2

border

#C8C7CC

text

#08070E

muted

#7B7A7E

Preview Lab

Preview with #313D78

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

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