#311C8B#311C8B

#311C8B is a dark, vivid violet. Relative luminance 0.033; OKLCH L 34.1% C 0.169 H 281.2°. Best body text is #FFFFFF at 12.58:1 contrast (WCAG AA passes).

Color values

HEX	#311C8B
RGB	rgb(49, 28, 139)
HSL	hsl(251, 66%, 33%)
HSV	hsv(251, 80%, 55%)
CMYK	cmyk(64.7%, 79.9%, 0%, 45.5%)
CIE-LAB	lab(21.38, 41.65, -57.58)
CIE-LCH	lch(21.38, 71.06, 305.88°)
OKLab	oklab(34.09% 0.0329 -0.1661)
OKLCH	oklch(34.09% 0.169 281.2)
XYZ	xyz(6.3406, 3.3471, 24.7330)
Luminance	0.0335 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311C8B #768B1C

analogous

#1C3F8B #311C8B #681C8B

triadic

#311C8B #8B311C #1C8B31

tetradic

#311C8B #8B1C3F #768B1C #1C8B68

square

#311C8B #8B1C3F #768B1C #1C8B68

split-complementary

#311C8B #8B681C #3F8B1C

monochromatic

#0D0725 #1F1258 #311C8B #4326BE #6347DA

Accessibility & contrast

On white

12.58

#311C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#311C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311C8B

12.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311C8B	#FFFFFF	#000000	##FFFFFF
##311C8B	1.00	12.58	1.67	12.58
#FFFFFF	12.58	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00378E

Deuteranopia (green-blind)

#002F89

Tritanopia (blue-blind)

#003D53

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #311c8b;
/* rgb */ color: rgb(49, 28, 139);
/* oklch */ color: oklch(34.1% 0.169 281.2);

Tailwind

colors: {
  custom: {
    50: '#765cae',
    500: '#311c8b',
    950: '#000000',
  },
}

SCSS

$custom: #311c8b;
$custom-light: #765cae;
$custom-dark: #000000;

JSON

{
  "hex": "#311c8b",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 139
  },
  "hsl": {
    "h": 251.351,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.34086,
    "c": 0.16937,
    "h": 281.2
  },
  "luminance": 0.03348
}

Semantic roles & 50–950 ramp

primary

#311C8B

secondary

#A6BC47

accent

#E93EC9

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#0A0410

muted

#7C797F

Preview Lab

Preview with #311C8B

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

Preview Lab → · Contrast checker → · Palette generator →