#631DB3#631DB3

#631DB3 is a dark, highly saturated violet. Relative luminance 0.068; OKLCH L 43.5% C 0.211 H 297.5°. Best body text is #FFFFFF at 8.91:1 contrast (WCAG AA passes).

Color values

HEX	#631DB3
RGB	rgb(99, 29, 179)
HSL	hsl(268, 72%, 41%)
HSV	hsv(268, 84%, 70%)
CMYK	cmyk(44.7%, 83.8%, 0%, 29.8%)
CIE-LAB	lab(31.31, 58.34, -65.42)
CIE-LCH	lch(31.31, 87.65, 311.73°)
OKLab	oklab(43.49% 0.0974 -0.1875)
OKLCH	oklch(43.49% 0.211 297.5)
XYZ	xyz(13.7195, 6.7858, 43.2260)
Luminance	0.0679 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631DB3 #6DB31D

analogous

#1D22B3 #631DB3 #AE1DB3

triadic

#631DB3 #B3631D #1DB363

tetradic

#631DB3 #B31D22 #6DB31D #1DB3AE

square

#631DB3 #B31D22 #6DB31D #1DB3AE

split-complementary

#631DB3 #B3AE1D #22B31D

monochromatic

#290C4A #46147E #631DB3 #8130DD #A164E6

Accessibility & contrast

On white

8.91

#631DB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#631DB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631DB3

8.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631DB3	#FFFFFF	#000000	##FFFFFF
##631DB3	1.00	8.91	2.36	8.91
#FFFFFF	8.91	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB7

Deuteranopia (green-blind)

#0048B0

Tritanopia (blue-blind)

#4D4A6B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #631db3;
/* rgb */ color: rgb(99, 29, 179);
/* oklch */ color: oklch(43.5% 0.211 297.5);

Tailwind

colors: {
  custom: {
    50: '#9864cb',
    500: '#631db3',
    950: '#000000',
  },
}

SCSS

$custom: #631db3;
$custom-light: #9864cb;
$custom-dark: #000000;

JSON

{
  "hex": "#631db3",
  "rgb": {
    "r": 99,
    "g": 29,
    "b": 179
  },
  "hsl": {
    "h": 268,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.4349,
    "c": 0.21126,
    "h": 297.5
  },
  "luminance": 0.06786
}

Semantic roles & 50–950 ramp

primary

#631DB3

secondary

#99CB61

accent

#EF399A

background

#F9F6FC

surface

#F2EBF9

border

#CCC6D2

text

#0F0613

muted

#7E7A82

Preview Lab

Preview with #631DB3

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

Preview Lab → · Contrast checker → · Palette generator →