#31209B#31209B

#31209B is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.3% C 0.185 H 278.1°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#31209B
RGB	rgb(49, 32, 155)
HSL	hsl(248, 66%, 37%)
HSV	hsv(248, 79%, 61%)
CMYK	cmyk(68.4%, 79.4%, 0%, 39.2%)
CIE-LAB	lab(23.84, 44.59, -63.41)
CIE-LCH	lch(23.84, 77.52, 305.11°)
OKLab	oklab(36.32% 0.0261 -0.1832)
OKLCH	oklch(36.32% 0.185 278.1)
XYZ	xyz(7.6976, 4.0519, 31.3804)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31209B #8A9B20

analogous

#204D9B #31209B #6F209B

triadic

#31209B #9B3120 #209B31

tetradic

#31209B #9B204D #8A9B20 #209B6F

square

#31209B #9B204D #8A9B20 #209B6F

split-complementary

#31209B #9B6F20 #4D9B20

monochromatic

#110B36 #211668 #31209B #412ACE #6B59DD

Accessibility & contrast

On white

11.60

#31209B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#31209B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31209B

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31209B	#FFFFFF	#000000	##FFFFFF
##31209B	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D9E

Deuteranopia (green-blind)

#003499

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #31209b;
/* rgb */ color: rgb(49, 32, 155);
/* oklch */ color: oklch(36.3% 0.185 278.1);

Tailwind

colors: {
  custom: {
    50: '#795fba',
    500: '#31209b',
    950: '#000000',
  },
}

SCSS

$custom: #31209b;
$custom-light: #795fba;
$custom-dark: #000000;

JSON

{
  "hex": "#31209b",
  "rgb": {
    "r": 49,
    "g": 32,
    "b": 155
  },
  "hsl": {
    "h": 248.293,
    "s": 65.775,
    "l": 36.667
  },
  "oklch": {
    "l": 0.36321,
    "c": 0.18504,
    "h": 278.1
  },
  "luminance": 0.04053
}

Semantic roles & 50–950 ramp

primary

#31209B

secondary

#B2C156

accent

#E93FD1

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #31209B

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

Preview Lab → · Contrast checker → · Palette generator →