#31229B#31229B

#31229B is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.6% C 0.183 H 277.9°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#31229B
RGB	rgb(49, 34, 155)
HSL	hsl(247, 64%, 37%)
HSV	hsv(247, 78%, 61%)
CMYK	cmyk(68.4%, 78.1%, 0%, 39.2%)
CIE-LAB	lab(24.20, 43.56, -62.82)
CIE-LCH	lch(24.20, 76.44, 304.74°)
OKLab	oklab(36.57% 0.0251 -0.1815)
OKLCH	oklch(36.57% 0.183 277.9)
XYZ	xyz(7.7531, 4.1629, 31.3989)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31229B #8C9B22

analogous

#22509B #31229B #6E229B

triadic

#31229B #9B3122 #229B31

tetradic

#31229B #9B2250 #8C9B22 #229B6E

square

#31229B #9B2250 #8C9B22 #229B6E

split-complementary

#31229B #9B6E22 #509B22

monochromatic

#110C37 #211769 #31229B #412DCD #6C5CDB

Accessibility & contrast

On white

11.46

#31229B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#31229B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31229B

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31229B	#FFFFFF	#000000	##FFFFFF
##31229B	1.00	11.46	1.83	11.46
#FFFFFF	11.46	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E9E

Deuteranopia (green-blind)

#003499

Tritanopia (blue-blind)

#00465E

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #31229b;
/* rgb */ color: rgb(49, 34, 155);
/* oklch */ color: oklch(36.6% 0.183 277.9);

Tailwind

colors: {
  custom: {
    50: '#7960ba',
    500: '#31229b',
    950: '#000000',
  },
}

SCSS

$custom: #31229b;
$custom-light: #7960ba;
$custom-dark: #000000;

JSON

{
  "hex": "#31229b",
  "rgb": {
    "r": 49,
    "g": 34,
    "b": 155
  },
  "hsl": {
    "h": 247.438,
    "s": 64.021,
    "l": 37.059
  },
  "oklch": {
    "l": 0.36574,
    "c": 0.1832,
    "h": 277.9
  },
  "luminance": 0.04164
}

Semantic roles & 50–950 ramp

primary

#31229B

secondary

#B3C059

accent

#E741D2

background

#F8F5FB

surface

#EFEAF6

border

#CAC6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #31229B

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

Preview Lab → · Contrast checker → · Palette generator →