#31378D#31378D

#31378D is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.6% C 0.140 H 274.7°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#31378D
RGB	rgb(49, 55, 141)
HSL	hsl(236, 48%, 37%)
HSV	hsv(236, 65%, 55%)
CMYK	cmyk(65.2%, 61%, 0%, 44.7%)
CIE-LAB	lab(27.59, 25.97, -48.64)
CIE-LCH	lch(27.59, 55.14, 298.10°)
OKLab	oklab(38.62% 0.0115 -0.14)
OKLCH	oklch(38.62% 0.14 274.7)
XYZ	xyz(7.4389, 5.3078, 25.8266)
Luminance	0.0531 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31378D #8D8731

analogous

#31658D #31378D #59318D

triadic

#31378D #8D3137 #378D31

tetradic

#31378D #8D3165 #8D8731 #318D59

square

#31378D #8D3165 #8D8731 #318D59

split-complementary

#31378D #8D5931 #658D31

monochromatic

#111432 #212560 #31378D #4149BA #6C73CC

Accessibility & contrast

On white

10.19

#31378D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#31378D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31378D

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31378D	#FFFFFF	#000000	##FFFFFF
##31378D	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004590

Deuteranopia (green-blind)

#003D8B

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #31378d;
/* rgb */ color: rgb(49, 55, 141);
/* oklch */ color: oklch(38.6% 0.140 274.7);

Tailwind

colors: {
  custom: {
    50: '#746daf',
    500: '#31378d',
    950: '#000000',
  },
}

SCSS

$custom: #31378d;
$custom-light: #746daf;
$custom-dark: #000000;

JSON

{
  "hex": "#31378d",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 141
  },
  "hsl": {
    "h": 236.087,
    "s": 48.421,
    "l": 37.255
  },
  "oklch": {
    "l": 0.38618,
    "c": 0.14046,
    "h": 274.7
  },
  "luminance": 0.05308
}

Semantic roles & 50–950 ramp

primary

#31378D

secondary

#B4AF66

accent

#CF50D8

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31378D

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

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