#31378C#31378C

#31378C is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.5% C 0.139 H 274.7°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#31378C
RGB	rgb(49, 55, 140)
HSL	hsl(236, 48%, 37%)
HSV	hsv(236, 65%, 55%)
CMYK	cmyk(65%, 60.7%, 0%, 45.1%)
CIE-LAB	lab(27.51, 25.61, -48.15)
CIE-LCH	lch(27.51, 54.54, 298.00°)
OKLab	oklab(38.53% 0.0115 -0.1386)
OKLCH	oklch(38.53% 0.139 274.7)
XYZ	xyz(7.3649, 5.2782, 25.4365)
Luminance	0.0528 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31378C #8C8631

analogous

#31658C #31378C #59318C

triadic

#31378C #8C3137 #378C31

tetradic

#31378C #8C3165 #8C8631 #318C59

square

#31378C #8C3165 #8C8631 #318C59

split-complementary

#31378C #8C5931 #658C31

monochromatic

#111331 #21255F #31378C #4149B9 #6C72CC

Accessibility & contrast

On white

10.22

#31378C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#31378C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31378C

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31378C	#FFFFFF	#000000	##FFFFFF
##31378C	1.00	10.22	2.06	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458F

Deuteranopia (green-blind)

#003D8A

Tritanopia (blue-blind)

#004C5C

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #31378c;
/* rgb */ color: rgb(49, 55, 140);
/* oklch */ color: oklch(38.5% 0.139 274.7);

Tailwind

colors: {
  custom: {
    50: '#746dae',
    500: '#31378c',
    950: '#000000',
  },
}

SCSS

$custom: #31378c;
$custom-light: #746dae;
$custom-dark: #000000;

JSON

{
  "hex": "#31378c",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 140
  },
  "hsl": {
    "h": 236.044,
    "s": 48.148,
    "l": 37.059
  },
  "oklch": {
    "l": 0.38532,
    "c": 0.13903,
    "h": 274.7
  },
  "luminance": 0.05279
}

Semantic roles & 50–950 ramp

primary

#31378C

secondary

#B3AE66

accent

#CF50D8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31378C

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

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