#31289F#31289F

#31289F is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.8% C 0.182 H 276.5°. Best body text is #FFFFFF at 10.85:1 contrast (WCAG AA passes).

Color values

HEX	#31289F
RGB	rgb(49, 40, 159)
HSL	hsl(245, 60%, 39%)
HSV	hsv(245, 75%, 62%)
CMYK	cmyk(69.2%, 74.8%, 0%, 37.6%)
CIE-LAB	lab(25.78, 41.57, -62.66)
CIE-LCH	lch(25.78, 75.19, 303.56°)
OKLab	oklab(37.81% 0.0207 -0.1811)
OKLCH	oklch(37.81% 0.182 276.5)
XYZ	xyz(8.2814, 4.6730, 33.2597)
Luminance	0.0467 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31289F #969F28

analogous

#285B9F #31289F #6D289F

triadic

#31289F #9F3128 #289F31

tetradic

#31289F #9F285B #969F28 #289F6D

square

#31289F #9F285B #969F28 #289F6D

split-complementary

#31289F #9F6D28 #5B9F28

monochromatic

#130F3D #221C6E #31289F #4337CD #7168D9

Accessibility & contrast

On white

10.85

#31289F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#31289F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31289F

10.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31289F	#FFFFFF	#000000	##FFFFFF
##31289F	1.00	10.85	1.93	10.85
#FFFFFF	10.85	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A2

Deuteranopia (green-blind)

#00389D

Tritanopia (blue-blind)

#004A61

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #31289f;
/* rgb */ color: rgb(49, 40, 159);
/* oklch */ color: oklch(37.8% 0.182 276.5);

Tailwind

colors: {
  custom: {
    50: '#7964bd',
    500: '#31289f',
    950: '#000000',
  },
}

SCSS

$custom: #31289f;
$custom-light: #7964bd;
$custom-dark: #000000;

JSON

{
  "hex": "#31289f",
  "rgb": {
    "r": 49,
    "g": 40,
    "b": 159
  },
  "hsl": {
    "h": 244.538,
    "s": 59.799,
    "l": 39.02
  },
  "oklch": {
    "l": 0.37813,
    "c": 0.18224,
    "h": 276.5
  },
  "luminance": 0.04674
}

Semantic roles & 50–950 ramp

primary

#31289F

secondary

#B8BF64

accent

#E345D7

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #31289F

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

Preview Lab → · Contrast checker → · Palette generator →