#31388E#31388E

#31388E is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.9% C 0.141 H 274.3°. Best body text is #FFFFFF at 10.06:1 contrast (WCAG AA passes).

Color values

HEX	#31388E
RGB	rgb(49, 56, 142)
HSL	hsl(235, 49%, 37%)
HSV	hsv(235, 65%, 56%)
CMYK	cmyk(65.5%, 60.6%, 0%, 44.3%)
CIE-LAB	lab(27.94, 25.66, -48.70)
CIE-LCH	lch(27.94, 55.05, 297.79°)
OKLab	oklab(38.9% 0.0105 -0.1402)
OKLCH	oklch(38.9% 0.141 274.3)
XYZ	xyz(7.5617, 5.4337, 26.2363)
Luminance	0.0543 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31388E #8E8731

analogous

#31668E #31388E #59318E

triadic

#31388E #8E3138 #388E31

tetradic

#31388E #8E3166 #8E8731 #318E59

square

#31388E #8E3166 #8E8731 #318E59

split-complementary

#31388E #8E5931 #668E31

monochromatic

#121433 #212661 #31388E #414ABB #6D74CD

Accessibility & contrast

On white

10.06

#31388E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#31388E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31388E

10.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31388E	#FFFFFF	#000000	##FFFFFF
##31388E	1.00	10.06	2.09	10.06
#FFFFFF	10.06	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004691

Deuteranopia (green-blind)

#003E8C

Tritanopia (blue-blind)

#004D5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #31388e;
/* rgb */ color: rgb(49, 56, 142);
/* oklch */ color: oklch(38.9% 0.141 274.3);

Tailwind

colors: {
  custom: {
    50: '#746eb0',
    500: '#31388e',
    950: '#000000',
  },
}

SCSS

$custom: #31388e;
$custom-light: #746eb0;
$custom-dark: #000000;

JSON

{
  "hex": "#31388e",
  "rgb": {
    "r": 49,
    "g": 56,
    "b": 142
  },
  "hsl": {
    "h": 235.484,
    "s": 48.691,
    "l": 37.451
  },
  "oklch": {
    "l": 0.38896,
    "c": 0.14055,
    "h": 274.3
  },
  "luminance": 0.05434
}

Semantic roles & 50–950 ramp

primary

#31388E

secondary

#B4AE67

accent

#CE50D8

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#090710

muted

#7B7A7F

Preview Lab

Preview with #31388E

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

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