#31239B#31239B

#31239B is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.7% C 0.182 H 277.7°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#31239B
RGB	rgb(49, 35, 155)
HSL	hsl(247, 63%, 37%)
HSV	hsv(247, 77%, 61%)
CMYK	cmyk(68.4%, 77.4%, 0%, 39.2%)
CIE-LAB	lab(24.39, 43.03, -62.51)
CIE-LCH	lch(24.39, 75.89, 304.54°)
OKLab	oklab(36.7% 0.0245 -0.1806)
OKLCH	oklch(36.7% 0.182 277.7)
XYZ	xyz(7.7821, 4.2209, 31.4086)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31239B #8D9B23

analogous

#23519B #31239B #6D239B

triadic

#31239B #9B3123 #239B31

tetradic

#31239B #9B2351 #8D9B23 #239B6D

square

#31239B #9B2351 #8D9B23 #239B6D

split-complementary

#31239B #9B6D23 #519B23

monochromatic

#110C37 #211869 #31239B #412ECD #6C5EDB

Accessibility & contrast

On white

11.39

#31239B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#31239B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31239B

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31239B	#FFFFFF	#000000	##FFFFFF
##31239B	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F9E

Deuteranopia (green-blind)

#003599

Tritanopia (blue-blind)

#00465E

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #31239b;
/* rgb */ color: rgb(49, 35, 155);
/* oklch */ color: oklch(36.7% 0.182 277.7);

Tailwind

colors: {
  custom: {
    50: '#7961ba',
    500: '#31239b',
    950: '#000000',
  },
}

SCSS

$custom: #31239b;
$custom-light: #7961ba;
$custom-dark: #000000;

JSON

{
  "hex": "#31239b",
  "rgb": {
    "r": 49,
    "g": 35,
    "b": 155
  },
  "hsl": {
    "h": 247,
    "s": 63.158,
    "l": 37.255
  },
  "oklch": {
    "l": 0.36704,
    "c": 0.18225,
    "h": 277.7
  },
  "luminance": 0.04222
}

Semantic roles & 50–950 ramp

primary

#31239B

secondary

#B4BF5A

accent

#E642D3

background

#F8F5FB

surface

#EFEAF6

border

#CAC6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #31239B

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

Preview Lab → · Contrast checker → · Palette generator →