#311A8B#311A8B

#311A8B is a dark, vivid violet. Relative luminance 0.033; OKLCH L 33.8% C 0.171 H 281.5°. Best body text is #FFFFFF at 12.72:1 contrast (WCAG AA passes).

Color values

HEX	#311A8B
RGB	rgb(49, 26, 139)
HSL	hsl(252, 68%, 32%)
HSV	hsv(252, 81%, 55%)
CMYK	cmyk(64.7%, 81.3%, 0%, 45.5%)
CIE-LAB	lab(21.04, 42.64, -58.15)
CIE-LCH	lch(21.04, 72.11, 306.26°)
OKLab	oklab(33.85% 0.0341 -0.1678)
OKLCH	oklch(33.85% 0.171 281.5)
XYZ	xyz(6.2948, 3.2554, 24.7177)
Luminance	0.0326 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311A8B #748B1A

analogous

#1A3C8B #311A8B #691A8B

triadic

#311A8B #8B311A #1A8B31

tetradic

#311A8B #8B1A3C #748B1A #1A8B69

square

#311A8B #8B1A3C #748B1A #1A8B69

split-complementary

#311A8B #8B691A #3C8B1A

monochromatic

#0D0724 #1F1057 #311A8B #4324BF #6343DC

Accessibility & contrast

On white

12.72

#311A8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#311A8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311A8B

12.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311A8B	#FFFFFF	#000000	##FFFFFF
##311A8B	1.00	12.72	1.65	12.72
#FFFFFF	12.72	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368E

Deuteranopia (green-blind)

#002E89

Tritanopia (blue-blind)

#003C53

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #311a8b;
/* rgb */ color: rgb(49, 26, 139);
/* oklch */ color: oklch(33.8% 0.171 281.5);

Tailwind

colors: {
  custom: {
    50: '#765bae',
    500: '#311a8b',
    950: '#000000',
  },
}

SCSS

$custom: #311a8b;
$custom-light: #765bae;
$custom-dark: #000000;

JSON

{
  "hex": "#311a8b",
  "rgb": {
    "r": 49,
    "g": 26,
    "b": 139
  },
  "hsl": {
    "h": 252.212,
    "s": 68.485,
    "l": 32.353
  },
  "oklch": {
    "l": 0.33846,
    "c": 0.1712,
    "h": 281.5
  },
  "luminance": 0.03256
}

Semantic roles & 50–950 ramp

primary

#311A8B

secondary

#A4BD44

accent

#EB3CC8

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#0A0410

muted

#7C797F

Preview Lab

Preview with #311A8B

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

Preview Lab → · Contrast checker → · Palette generator →