#31388A#31388A

#31388A is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.6% C 0.135 H 274.5°. Best body text is #FFFFFF at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#31388A
RGB	rgb(49, 56, 138)
HSL	hsl(235, 48%, 37%)
HSV	hsv(235, 64%, 54%)
CMYK	cmyk(64.5%, 59.4%, 0%, 45.9%)
CIE-LAB	lab(27.62, 24.21, -46.75)
CIE-LCH	lch(27.62, 52.65, 297.38°)
OKLab	oklab(38.56% 0.0105 -0.1344)
OKLCH	oklch(38.56% 0.135 274.5)
XYZ	xyz(7.2667, 5.3157, 24.6829)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31388A #8A8331

analogous

#31658A #31388A #57318A

triadic

#31388A #8A3138 #388A31

tetradic

#31388A #8A3165 #8A8331 #318A57

square

#31388A #8A3165 #8A8331 #318A57

split-complementary

#31388A #8A5731 #658A31

monochromatic

#111330 #21265D #31388A #414AB7 #6B72CA

Accessibility & contrast

On white

10.18

#31388A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#31388A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31388A

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31388A	#FFFFFF	#000000	##FFFFFF
##31388A	1.00	10.18	2.06	10.18
#FFFFFF	10.18	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458D

Deuteranopia (green-blind)

#003D88

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #31388a;
/* rgb */ color: rgb(49, 56, 138);
/* oklch */ color: oklch(38.6% 0.135 274.5);

Tailwind

colors: {
  custom: {
    50: '#736ead',
    500: '#31388a',
    950: '#000000',
  },
}

SCSS

$custom: #31388a;
$custom-light: #736ead;
$custom-dark: #000000;

JSON

{
  "hex": "#31388a",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 138
  },
  "hsl": {
    "h": 235.281,
    "s": 47.594,
    "l": 36.667
  },
  "oklch": {
    "l": 0.38558,
    "c": 0.13483,
    "h": 274.5
  },
  "luminance": 0.05316
}

Semantic roles & 50–950 ramp

primary

#31388A

secondary

#B2AC65

accent

#CD51D7

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31388A

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

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