#631B8B#631B8B

#631B8B is a dark, vivid violet. Relative luminance 0.053; OKLCH L 39.8% C 0.174 H 309.7°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#631B8B
RGB	rgb(99, 27, 139)
HSL	hsl(279, 67%, 33%)
HSV	hsv(279, 81%, 55%)
CMYK	cmyk(28.8%, 80.6%, 0%, 45.5%)
CIE-LAB	lab(27.58, 49.76, -47.19)
CIE-LCH	lch(27.58, 68.57, 316.52°)
OKLab	oklab(39.82% 0.1111 -0.1339)
OKLCH	oklch(39.82% 0.174 309.7)
XYZ	xyz(10.1968, 5.3008, 24.9071)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B8B #438B1B

analogous

#2B1B8B #631B8B #8B1B7B

triadic

#631B8B #8B631B #1B8B63

tetradic

#631B8B #8B2B1B #438B1B #1B7B8B

square

#631B8B #8B2B1B #438B1B #1B7B8B

split-complementary

#631B8B #7B8B1B #1B8B2B

monochromatic

#1A0725 #3F1158 #631B8B #8725BE #A645DB

Accessibility & contrast

On white

10.19

#631B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#631B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B8B

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B8B	#FFFFFF	#000000	##FFFFFF
##631B8B	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#004289

Tritanopia (blue-blind)

#5D3753

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #631b8b;
/* rgb */ color: rgb(99, 27, 139);
/* oklch */ color: oklch(39.8% 0.174 309.7);

Tailwind

colors: {
  custom: {
    50: '#9461ae',
    500: '#631b8b',
    950: '#000000',
  },
}

SCSS

$custom: #631b8b;
$custom-light: #9461ae;
$custom-dark: #000000;

JSON

{
  "hex": "#631b8b",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 139
  },
  "hsl": {
    "h": 278.571,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.39817,
    "c": 0.17401,
    "h": 309.7
  },
  "luminance": 0.05301
}

Semantic roles & 50–950 ramp

primary

#631B8B

secondary

#70BC45

accent

#EA3D7B

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #631B8B

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

Preview Lab → · Contrast checker → · Palette generator →