#31489B#31489B

#31489B is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.2% C 0.138 H 268.4°. Best body text is #FFFFFF at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#31489B
RGB	rgb(49, 72, 155)
HSL	hsl(227, 52%, 40%)
HSV	hsv(227, 68%, 61%)
CMYK	cmyk(68.4%, 53.5%, 0%, 39.2%)
CIE-LAB	lab(33.25, 19.74, -48.03)
CIE-LCH	lch(33.25, 51.93, 292.34°)
OKLab	oklab(43.19% -0.0038 -0.138)
OKLCH	oklch(43.19% 0.138 268.4)
XYZ	xyz(9.4984, 7.6534, 31.9807)
Luminance	0.0765 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31489B #9B8431

analogous

#317D9B #31489B #4F319B

triadic

#31489B #9B3148 #489B31

tetradic

#31489B #9B317D #9B8431 #319B4F

square

#31489B #9B317D #9B8431 #319B4F

split-complementary

#31489B #9B4F31 #7D9B31

monochromatic

#141D3E #22326D #31489B #4561C4 #7388D3

Accessibility & contrast

On white

8.30

#31489B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#31489B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31489B

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31489B	#FFFFFF	#000000	##FFFFFF
##31489B	1.00	8.30	2.53	8.30
#FFFFFF	8.30	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11539E

Deuteranopia (green-blind)

#004A99

Tritanopia (blue-blind)

#005C6A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #31489b;
/* rgb */ color: rgb(49, 72, 155);
/* oklch */ color: oklch(43.2% 0.138 268.4);

Tailwind

colors: {
  custom: {
    50: '#767ab9',
    500: '#31489b',
    950: '#000000',
  },
}

SCSS

$custom: #31489b;
$custom-light: #767ab9;
$custom-dark: #000000;

JSON

{
  "hex": "#31489b",
  "rgb": {
    "r": 49,
    "g": 72,
    "b": 155
  },
  "hsl": {
    "h": 226.981,
    "s": 51.961,
    "l": 40
  },
  "oklch": {
    "l": 0.43188,
    "c": 0.13804,
    "h": 268.4
  },
  "luminance": 0.07654
}

Semantic roles & 50–950 ramp

primary

#31489B

secondary

#BBAA6D

accent

#BC4CDB

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#090911

muted

#7B7B80

Preview Lab

Preview with #31489B

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

Preview Lab → · Contrast checker → · Palette generator →