#631B8F#631B8F

#631B8F is a dark, vivid violet. Relative luminance 0.054; OKLCH L 40.1% C 0.178 H 308.2°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#631B8F
RGB	rgb(99, 27, 143)
HSL	hsl(277, 68%, 33%)
HSV	hsv(277, 81%, 56%)
CMYK	cmyk(30.8%, 81.1%, 0%, 43.9%)
CIE-LAB	lab(27.90, 50.65, -49.14)
CIE-LCH	lch(27.90, 70.57, 315.87°)
OKLab	oklab(40.14% 0.1101 -0.1397)
OKLCH	oklch(40.14% 0.178 308.2)
XYZ	xyz(10.4944, 5.4199, 26.4746)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B8F #478F1B

analogous

#291B8F #631B8F #8F1B81

triadic

#631B8F #8F631B #1B8F63

tetradic

#631B8F #8F291B #478F1B #1B818F

square

#631B8F #8F291B #478F1B #1B818F

split-complementary

#631B8F #818F1B #1B8F29

monochromatic

#1C0828 #3F115C #631B8F #8725C2 #A448DC

Accessibility & contrast

On white

10.08

#631B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#631B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B8F

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B8F	#FFFFFF	#000000	##FFFFFF
##631B8F	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F92

Deuteranopia (green-blind)

#00438D

Tritanopia (blue-blind)

#5C3955

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #631b8f;
/* rgb */ color: rgb(99, 27, 143);
/* oklch */ color: oklch(40.1% 0.178 308.2);

Tailwind

colors: {
  custom: {
    50: '#9461b1',
    500: '#631b8f',
    950: '#000000',
  },
}

SCSS

$custom: #631b8f;
$custom-light: #9461b1;
$custom-dark: #000000;

JSON

{
  "hex": "#631b8f",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 143
  },
  "hsl": {
    "h": 277.241,
    "s": 68.235,
    "l": 33.333
  },
  "oklch": {
    "l": 0.40145,
    "c": 0.17786,
    "h": 308.2
  },
  "luminance": 0.0542
}

Semantic roles & 50–950 ramp

primary

#631B8F

secondary

#75BE48

accent

#EB3D7F

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0511

muted

#7E7A80

Preview Lab

Preview with #631B8F

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

Preview Lab → · Contrast checker → · Palette generator →