#311B7E#311B7E

#311B7E is a dark, vivid violet. Relative luminance 0.029; OKLCH L 32.6% C 0.154 H 284.0°. Best body text is #FFFFFF at 13.22:1 contrast (WCAG AA passes).

Color values

HEX	#311B7E
RGB	rgb(49, 27, 126)
HSL	hsl(253, 65%, 30%)
HSV	hsv(253, 79%, 49%)
CMYK	cmyk(61.1%, 78.6%, 0%, 50.6%)
CIE-LAB	lab(19.81, 38.12, -51.97)
CIE-LCH	lch(19.81, 64.46, 306.26°)
OKLab	oklab(32.57% 0.0373 -0.1498)
OKLCH	oklch(32.57% 0.154 284)
XYZ	xyz(5.4233, 2.9428, 20.0169)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B7E #687E1B

analogous

#1B377E #311B7E #621B7E

triadic

#311B7E #7E311B #1B7E31

tetradic

#311B7E #7E1B37 #687E1B #1B7E62

square

#311B7E #7E1B37 #687E1B #1B7E62

split-complementary

#311B7E #7E621B #377E1B

monochromatic

#0A0519 #1D104C #311B7E #4526B0 #603ED6

Accessibility & contrast

On white

13.22

#311B7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#311B7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B7E

13.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B7E	#FFFFFF	#000000	##FFFFFF
##311B7E	1.00	13.22	1.59	13.22
#FFFFFF	13.22	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003381

Deuteranopia (green-blind)

#002D7C

Tritanopia (blue-blind)

#01374B

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #311b7e;
/* rgb */ color: rgb(49, 27, 126);
/* oklch */ color: oklch(32.6% 0.154 284.0);

Tailwind

colors: {
  custom: {
    50: '#735aa4',
    500: '#311b7e',
    950: '#000000',
  },
}

SCSS

$custom: #311b7e;
$custom-light: #735aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#311b7e",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 126
  },
  "hsl": {
    "h": 253.333,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.32572,
    "c": 0.15436,
    "h": 284
  },
  "luminance": 0.02943
}

Semantic roles & 50–950 ramp

primary

#311B7E

secondary

#99B243

accent

#E840C2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #311B7E

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

Preview Lab → · Contrast checker → · Palette generator →