#311B8B#311B8B

#311B8B is a dark, vivid violet. Relative luminance 0.033; OKLCH L 34.0% C 0.170 H 281.3°. Best body text is #FFFFFF at 12.65:1 contrast (WCAG AA passes).

Color values

HEX	#311B8B
RGB	rgb(49, 27, 139)
HSL	hsl(252, 67%, 33%)
HSV	hsv(252, 81%, 55%)
CMYK	cmyk(64.7%, 80.6%, 0%, 45.5%)
CIE-LAB	lab(21.21, 42.15, -57.86)
CIE-LCH	lch(21.21, 71.59, 306.07°)
OKLab	oklab(33.96% 0.0335 -0.167)
OKLCH	oklch(33.96% 0.17 281.3)
XYZ	xyz(6.3173, 3.3004, 24.7252)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B8B #758B1B

analogous

#1B3D8B #311B8B #691B8B

triadic

#311B8B #8B311B #1B8B31

tetradic

#311B8B #8B1B3D #758B1B #1B8B69

square

#311B8B #8B1B3D #758B1B #1B8B69

split-complementary

#311B8B #8B691B #3D8B1B

monochromatic

#0D0725 #1F1158 #311B8B #4325BE #6345DB

Accessibility & contrast

On white

12.65

#311B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#311B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B8B

12.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B8B	#FFFFFF	#000000	##FFFFFF
##311B8B	1.00	12.65	1.66	12.65
#FFFFFF	12.65	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378E

Deuteranopia (green-blind)

#002F89

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #311b8b;
/* rgb */ color: rgb(49, 27, 139);
/* oklch */ color: oklch(34.0% 0.170 281.3);

Tailwind

colors: {
  custom: {
    50: '#765bae',
    500: '#311b8b',
    950: '#000000',
  },
}

SCSS

$custom: #311b8b;
$custom-light: #765bae;
$custom-dark: #000000;

JSON

{
  "hex": "#311b8b",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 139
  },
  "hsl": {
    "h": 251.786,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.33964,
    "c": 0.1703,
    "h": 281.3
  },
  "luminance": 0.03301
}

Semantic roles & 50–950 ramp

primary

#311B8B

secondary

#A5BC45

accent

#EA3DC8

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#0A0410

muted

#7C797F

Preview Lab

Preview with #311B8B

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

Preview Lab → · Contrast checker → · Palette generator →