#31479A#31479A

#31479A is a dark, vivid blue. Relative luminance 0.075; OKLCH L 42.9% C 0.138 H 268.8°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#31479A
RGB	rgb(49, 71, 154)
HSL	hsl(227, 52%, 40%)
HSV	hsv(227, 68%, 60%)
CMYK	cmyk(68.2%, 53.9%, 0%, 39.6%)
CIE-LAB	lab(32.90, 20.04, -47.99)
CIE-LCH	lch(32.90, 52.01, 292.66°)
OKLab	oklab(42.9% -0.003 -0.1379)
OKLCH	oklch(42.9% 0.138 268.8)
XYZ	xyz(9.3506, 7.4917, 31.5188)
Luminance	0.0749 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31479A #9A8431

analogous

#317B9A #31479A #50319A

triadic

#31479A #9A3147 #479A31

tetradic

#31479A #9A317B #9A8431 #319A50

square

#31479A #9A317B #9A8431 #319A50

split-complementary

#31479A #9A5031 #7B9A31

monochromatic

#131C3D #22326C #31479A #455FC4 #7387D2

Accessibility & contrast

On white

8.40

#31479A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#31479A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31479A

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31479A	#FFFFFF	#000000	##FFFFFF
##31479A	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F529D

Deuteranopia (green-blind)

#004998

Tritanopia (blue-blind)

#005B69

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #31479a;
/* rgb */ color: rgb(49, 71, 154);
/* oklch */ color: oklch(42.9% 0.138 268.8);

Tailwind

colors: {
  custom: {
    50: '#7679b8',
    500: '#31479a',
    950: '#000000',
  },
}

SCSS

$custom: #31479a;
$custom-light: #7679b8;
$custom-dark: #000000;

JSON

{
  "hex": "#31479a",
  "rgb": {
    "r": 49,
    "g": 71,
    "b": 154
  },
  "hsl": {
    "h": 227.429,
    "s": 51.724,
    "l": 39.804
  },
  "oklch": {
    "l": 0.42901,
    "c": 0.13791,
    "h": 268.8
  },
  "luminance": 0.07493
}

Semantic roles & 50–950 ramp

primary

#31479A

secondary

#BAAA6C

accent

#BD4DDB

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #31479A

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

Preview Lab → · Contrast checker → · Palette generator →