#631F8B#631F8B

#631F8B is a dark, vivid violet. Relative luminance 0.055; OKLCH L 40.2% C 0.170 H 309.3°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#631F8B
RGB	rgb(99, 31, 139)
HSL	hsl(278, 64%, 33%)
HSV	hsv(278, 78%, 55%)
CMYK	cmyk(28.8%, 77.7%, 0%, 45.5%)
CIE-LAB	lab(28.11, 48.23, -46.33)
CIE-LCH	lch(28.11, 66.87, 316.15°)
OKLab	oklab(40.19% 0.1075 -0.1314)
OKLCH	oklch(40.19% 0.17 309.3)
XYZ	xyz(10.2948, 5.4969, 24.9398)
Luminance	0.0550 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631F8B #478B1F

analogous

#2D1F8B #631F8B #8B1F7D

triadic

#631F8B #8B631F #1F8B63

tetradic

#631F8B #8B2D1F #478B1F #1F7D8B

square

#631F8B #8B2D1F #478B1F #1F7D8B

split-complementary

#631F8B #7D8B1F #1F8B2D

monochromatic

#1C0927 #3F1459 #631F8B #872ABD #A44DD7

Accessibility & contrast

On white

10.00

#631F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#631F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631F8B

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631F8B	#FFFFFF	#000000	##FFFFFF
##631F8B	1.00	10.00	2.10	10.00
#FFFFFF	10.00	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00408E

Deuteranopia (green-blind)

#004389

Tritanopia (blue-blind)

#5D3954

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #631f8b;
/* rgb */ color: rgb(99, 31, 139);
/* oklch */ color: oklch(40.2% 0.170 309.3);

Tailwind

colors: {
  custom: {
    50: '#9463ae',
    500: '#631f8b',
    950: '#000000',
  },
}

SCSS

$custom: #631f8b;
$custom-light: #9463ae;
$custom-dark: #000000;

JSON

{
  "hex": "#631f8b",
  "rgb": {
    "r": 99,
    "g": 31,
    "b": 139
  },
  "hsl": {
    "h": 277.778,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.4019,
    "c": 0.16979,
    "h": 309.3
  },
  "luminance": 0.05497
}

Semantic roles & 50–950 ramp

primary

#631F8B

secondary

#75BA4C

accent

#E7417E

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0610

muted

#7E7A7F

Preview Lab

Preview with #631F8B

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

Preview Lab → · Contrast checker → · Palette generator →