#631BB4#631BB4

#631BB4 is a dark, highly saturated violet. Relative luminance 0.067; OKLCH L 43.4% C 0.214 H 297.4°. Best body text is #FFFFFF at 8.95:1 contrast (WCAG AA passes).

Color values

HEX	#631BB4
RGB	rgb(99, 27, 180)
HSL	hsl(268, 74%, 41%)
HSV	hsv(268, 85%, 71%)
CMYK	cmyk(45%, 85%, 0%, 29.4%)
CIE-LAB	lab(31.19, 59.23, -66.22)
CIE-LCH	lch(31.19, 88.84, 311.81°)
OKLab	oklab(43.43% 0.0983 -0.1898)
OKLCH	oklch(43.43% 0.214 297.4)
XYZ	xyz(13.7736, 6.7315, 43.7448)
Luminance	0.0673 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631BB4 #6CB41B

analogous

#1B20B4 #631BB4 #AF1BB4

triadic

#631BB4 #B4631B #1BB463

tetradic

#631BB4 #B41B20 #6CB41B #1BB4AF

square

#631BB4 #B41B20 #6CB41B #1BB4AF

split-complementary

#631BB4 #B4AF1B #20B41B

monochromatic

#280B4A #46137F #631BB4 #812DDF #A162E7

Accessibility & contrast

On white

8.95

#631BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#631BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631BB4

8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631BB4	#FFFFFF	#000000	##FFFFFF
##631BB4	1.00	8.95	2.35	8.95
#FFFFFF	8.95	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB8

Deuteranopia (green-blind)

#0048B1

Tritanopia (blue-blind)

#4D4A6B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #631bb4;
/* rgb */ color: rgb(99, 27, 180);
/* oklch */ color: oklch(43.4% 0.214 297.4);

Tailwind

colors: {
  custom: {
    50: '#9863cc',
    500: '#631bb4',
    950: '#000000',
  },
}

SCSS

$custom: #631bb4;
$custom-light: #9863cc;
$custom-dark: #000000;

JSON

{
  "hex": "#631bb4",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 180
  },
  "hsl": {
    "h": 268.235,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.43432,
    "c": 0.21373,
    "h": 297.4
  },
  "luminance": 0.06732
}

Semantic roles & 50–950 ramp

primary

#631BB4

secondary

#99CC5F

accent

#F13799

background

#F9F6FC

surface

#F2EBF9

border

#CCC6D2

text

#0F0613

muted

#7E7A82

Preview Lab

Preview with #631BB4

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

Preview Lab → · Contrast checker → · Palette generator →