#311D7B#311D7B

#311D7B is a dark, vivid violet. Relative luminance 0.030; OKLCH L 32.5% C 0.148 H 284.3°. Best body text is #FFFFFF at 13.19:1 contrast (WCAG AA passes).

Color values

HEX	#311D7B
RGB	rgb(49, 29, 123)
HSL	hsl(253, 62%, 30%)
HSV	hsv(253, 76%, 48%)
CMYK	cmyk(60.2%, 76.4%, 0%, 51.8%)
CIE-LAB	lab(19.89, 36.09, -49.94)
CIE-LCH	lch(19.89, 61.62, 305.85°)
OKLab	oklab(32.53% 0.0366 -0.1438)
OKLCH	oklch(32.53% 0.148 284.3)
XYZ	xyz(5.2800, 2.9614, 19.0284)
Luminance	0.0296 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D7B #677B1D

analogous

#1D387B #311D7B #601D7B

triadic

#311D7B #7B311D #1D7B31

tetradic

#311D7B #7B1D38 #677B1D #1D7B60

square

#311D7B #7B1D38 #677B1D #1D7B60

split-complementary

#311D7B #7B601D #387B1D

monochromatic

#0A0619 #1D1149 #311D7B #4529AD #5F40D2

Accessibility & contrast

On white

13.19

#311D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#311D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D7B

13.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D7B	#FFFFFF	#000000	##FFFFFF
##311D7B	1.00	13.19	1.59	13.19
#FFFFFF	13.19	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00337E

Deuteranopia (green-blind)

#002D79

Tritanopia (blue-blind)

#07374A

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #311d7b;
/* rgb */ color: rgb(49, 29, 123);
/* oklch */ color: oklch(32.5% 0.148 284.3);

Tailwind

colors: {
  custom: {
    50: '#735ba2',
    500: '#311d7b',
    950: '#000000',
  },
}

SCSS

$custom: #311d7b;
$custom-light: #735ba2;
$custom-dark: #000000;

JSON

{
  "hex": "#311d7b",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 123
  },
  "hsl": {
    "h": 252.766,
    "s": 61.842,
    "l": 29.804
  },
  "oklch": {
    "l": 0.32531,
    "c": 0.14844,
    "h": 284.3
  },
  "luminance": 0.02962
}

Semantic roles & 50–950 ramp

primary

#311D7B

secondary

#98AF45

accent

#E543C2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #311D7B

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

Preview Lab → · Contrast checker → · Palette generator →