#631C90#631C90

#631C90 is a dark, vivid violet. Relative luminance 0.055; OKLCH L 40.3% C 0.178 H 307.8°. Best body text is #FFFFFF at 10.00:1 contrast (WCAG AA passes).

Color values

HEX	#631C90
RGB	rgb(99, 28, 144)
HSL	hsl(277, 67%, 34%)
HSV	hsv(277, 81%, 56%)
CMYK	cmyk(31.3%, 80.6%, 0%, 43.5%)
CIE-LAB	lab(28.11, 50.51, -49.42)
CIE-LCH	lch(28.11, 70.67, 315.62°)
OKLab	oklab(40.32% 0.109 -0.1405)
OKLCH	oklch(40.32% 0.178 307.8)
XYZ	xyz(10.5938, 5.4969, 26.8831)
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

#631C90 #49901C

analogous

#291C90 #631C90 #901C83

triadic

#631C90 #90631C #1C9063

tetradic

#631C90 #90291C #49901C #1C8390

square

#631C90 #90291C #49901C #1C8390

split-complementary

#631C90 #83901C #1C9029

monochromatic

#1D082A #40125D #631C90 #8626C3 #A34ADC

Accessibility & contrast

On white

10.00

#631C90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#631C90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631C90

10.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631C90	#FFFFFF	#000000	##FFFFFF
##631C90	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)

#004093

Deuteranopia (green-blind)

#00438E

Tritanopia (blue-blind)

#5C3A56

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #631c90;
/* rgb */ color: rgb(99, 28, 144);
/* oklch */ color: oklch(40.3% 0.178 307.8);

Tailwind

colors: {
  custom: {
    50: '#9461b1',
    500: '#631c90',
    950: '#000000',
  },
}

SCSS

$custom: #631c90;
$custom-light: #9461b1;
$custom-dark: #000000;

JSON

{
  "hex": "#631c90",
  "rgb": {
    "r": 99,
    "g": 28,
    "b": 144
  },
  "hsl": {
    "h": 276.724,
    "s": 67.442,
    "l": 33.725
  },
  "oklch": {
    "l": 0.40315,
    "c": 0.17785,
    "h": 307.8
  },
  "luminance": 0.05497
}

Semantic roles & 50–950 ramp

primary

#631C90

secondary

#77BE4A

accent

#EA3D81

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0511

muted

#7E7A80

Preview Lab

Preview with #631C90

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

Preview Lab → · Contrast checker → · Palette generator →