#631B9B#631B9B

#631B9B is a dark, vivid violet. Relative luminance 0.058; OKLCH L 41.2% C 0.189 H 304.3°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#631B9B
RGB	rgb(99, 27, 155)
HSL	hsl(274, 70%, 36%)
HSV	hsv(274, 83%, 61%)
CMYK	cmyk(36.1%, 82.6%, 0%, 39.2%)
CIE-LAB	lab(28.91, 53.38, -54.87)
CIE-LCH	lch(28.91, 76.55, 314.21°)
OKLab	oklab(41.16% 0.1068 -0.1565)
OKLCH	oklch(41.16% 0.189 304.3)
XYZ	xyz(11.4525, 5.8031, 31.5208)
Luminance	0.0580 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B9B #539B1B

analogous

#231B9B #631B9B #9B1B93

triadic

#631B9B #9B631B #1B9B63

tetradic

#631B9B #9B231B #539B1B #1B939B

square

#631B9B #9B231B #539B1B #1B939B

split-complementary

#631B9B #939B1B #1B9B23

monochromatic

#200933 #421267 #631B9B #8424CF #A150E0

Accessibility & contrast

On white

9.72

#631B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#631B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B9B

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B9B	#FFFFFF	#000000	##FFFFFF
##631B9B	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00439E

Deuteranopia (green-blind)

#004499

Tritanopia (blue-blind)

#583E5C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #631b9b;
/* rgb */ color: rgb(99, 27, 155);
/* oklch */ color: oklch(41.2% 0.189 304.3);

Tailwind

colors: {
  custom: {
    50: '#9562b9',
    500: '#631b9b',
    950: '#000000',
  },
}

SCSS

$custom: #631b9b;
$custom-light: #9562b9;
$custom-dark: #000000;

JSON

{
  "hex": "#631b9b",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 155
  },
  "hsl": {
    "h": 273.75,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.41163,
    "c": 0.18946,
    "h": 304.3
  },
  "luminance": 0.05803
}

Semantic roles & 50–950 ramp

primary

#631B9B

secondary

#82C34F

accent

#ED3B89

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0612

muted

#7E7A81

Preview Lab

Preview with #631B9B

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

Preview Lab → · Contrast checker → · Palette generator →