#631C8C#631C8C

#631C8C is a dark, vivid violet. Relative luminance 0.054; OKLCH L 40.0% C 0.174 H 309.2°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#631C8C
RGB	rgb(99, 28, 140)
HSL	hsl(278, 67%, 33%)
HSV	hsv(278, 80%, 55%)
CMYK	cmyk(29.3%, 80%, 0%, 45.1%)
CIE-LAB	lab(27.78, 49.61, -47.47)
CIE-LCH	lch(27.78, 68.67, 316.26°)
OKLab	oklab(39.99% 0.11 -0.1348)
OKLCH	oklch(39.99% 0.174 309.2)
XYZ	xyz(10.2935, 5.3768, 25.3014)
Luminance	0.0538 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631C8C #458C1C

analogous

#2B1C8C #631C8C #8C1C7D

triadic

#631C8C #8C631C #1C8C63

tetradic

#631C8C #8C2B1C #458C1C #1C7D8C

square

#631C8C #8C2B1C #458C1C #1C7D8C

split-complementary

#631C8C #7D8C1C #1C8C2B

monochromatic

#1B0826 #3F1259 #631C8C #8726BF #A548DA

Accessibility & contrast

On white

10.12

#631C8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#631C8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631C8C

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631C8C	#FFFFFF	#000000	##FFFFFF
##631C8C	1.00	10.12	2.08	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8F

Deuteranopia (green-blind)

#00428A

Tritanopia (blue-blind)

#5D3854

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #631c8c;
/* rgb */ color: rgb(99, 28, 140);
/* oklch */ color: oklch(40.0% 0.174 309.2);

Tailwind

colors: {
  custom: {
    50: '#9461ae',
    500: '#631c8c',
    950: '#000000',
  },
}

SCSS

$custom: #631c8c;
$custom-light: #9461ae;
$custom-dark: #000000;

JSON

{
  "hex": "#631c8c",
  "rgb": {
    "r": 99,
    "g": 28,
    "b": 140
  },
  "hsl": {
    "h": 278.036,
    "s": 66.667,
    "l": 32.941
  },
  "oklch": {
    "l": 0.39987,
    "c": 0.17396,
    "h": 309.2
  },
  "luminance": 0.05377
}

Semantic roles & 50–950 ramp

primary

#631C8C

secondary

#72BC48

accent

#EA3E7D

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #631C8C

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

Preview Lab → · Contrast checker → · Palette generator →