#31378E#31378E

#31378E is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.7% C 0.142 H 274.6°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#31378E
RGB	rgb(49, 55, 142)
HSL	hsl(236, 49%, 37%)
HSV	hsv(236, 65%, 56%)
CMYK	cmyk(65.5%, 61.3%, 0%, 44.3%)
CIE-LAB	lab(27.68, 26.33, -49.13)
CIE-LCH	lch(27.68, 55.74, 298.19°)
OKLab	oklab(38.7% 0.0114 -0.1414)
OKLCH	oklch(38.7% 0.142 274.6)
XYZ	xyz(7.5137, 5.3377, 26.2203)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31378E #8E8831

analogous

#31668E #31378E #5A318E

triadic

#31378E #8E3137 #378E31

tetradic

#31378E #8E3166 #8E8831 #318E5A

square

#31378E #8E3166 #8E8831 #318E5A

split-complementary

#31378E #8E5A31 #668E31

monochromatic

#121433 #212561 #31378E #4149BB #6D73CD

Accessibility & contrast

On white

10.16

#31378E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#31378E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31378E

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31378E	#FFFFFF	#000000	##FFFFFF
##31378E	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004691

Deuteranopia (green-blind)

#003D8C

Tritanopia (blue-blind)

#004C5D

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #31378e;
/* rgb */ color: rgb(49, 55, 142);
/* oklch */ color: oklch(38.7% 0.142 274.6);

Tailwind

colors: {
  custom: {
    50: '#746db0',
    500: '#31378e',
    950: '#000000',
  },
}

SCSS

$custom: #31378e;
$custom-light: #746db0;
$custom-dark: #000000;

JSON

{
  "hex": "#31378e",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 142
  },
  "hsl": {
    "h": 236.129,
    "s": 48.691,
    "l": 37.451
  },
  "oklch": {
    "l": 0.38704,
    "c": 0.14188,
    "h": 274.6
  },
  "luminance": 0.05338
}

Semantic roles & 50–950 ramp

primary

#31378E

secondary

#B4AF67

accent

#CF50D8

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31378E

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

Preview Lab → · Contrast checker → · Palette generator →