#631B8E#631B8E

#631B8E is a dark, vivid violet. Relative luminance 0.054; OKLCH L 40.1% C 0.177 H 308.6°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#631B8E
RGB	rgb(99, 27, 142)
HSL	hsl(278, 68%, 33%)
HSV	hsv(278, 81%, 56%)
CMYK	cmyk(30.3%, 81%, 0%, 44.3%)
CIE-LAB	lab(27.82, 50.43, -48.66)
CIE-LCH	lch(27.82, 70.07, 316.02°)
OKLab	oklab(40.06% 0.1104 -0.1383)
OKLCH	oklch(40.06% 0.177 308.6)
XYZ	xyz(10.4190, 5.3897, 26.0774)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B8E #468E1B

analogous

#291B8E #631B8E #8E1B7F

triadic

#631B8E #8E631B #1B8E63

tetradic

#631B8E #8E291B #468E1B #1B7F8E

square

#631B8E #8E291B #468E1B #1B7F8E

split-complementary

#631B8E #7F8E1B #1B8E29

monochromatic

#1B0727 #3F115B #631B8E #8725C1 #A447DC

Accessibility & contrast

On white

10.11

#631B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#631B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B8E

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B8E	#FFFFFF	#000000	##FFFFFF
##631B8E	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F91

Deuteranopia (green-blind)

#00428C

Tritanopia (blue-blind)

#5C3955

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #631b8e;
/* rgb */ color: rgb(99, 27, 142);
/* oklch */ color: oklch(40.1% 0.177 308.6);

Tailwind

colors: {
  custom: {
    50: '#9461b0',
    500: '#631b8e',
    950: '#000000',
  },
}

SCSS

$custom: #631b8e;
$custom-light: #9461b0;
$custom-dark: #000000;

JSON

{
  "hex": "#631b8e",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 142
  },
  "hsl": {
    "h": 277.565,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.40062,
    "c": 0.17689,
    "h": 308.6
  },
  "luminance": 0.0539
}

Semantic roles & 50–950 ramp

primary

#631B8E

secondary

#73BE47

accent

#EB3D7E

background

#F9F6FA

surface

#F2EBF5

border

#CCC6CF

text

#0E0511

muted

#7E7A80

Preview Lab

Preview with #631B8E

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

Preview Lab → · Contrast checker → · Palette generator →