#A637BB#A637BB

#A637BB is a mid, highly saturated purple. Relative luminance 0.144; OKLCH L 55.2% C 0.211 H 320.8°. Best body text is #FFFFFF at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#A637BB
RGB	rgb(166, 55, 187)
HSL	hsl(290, 55%, 47%)
HSV	hsv(290, 71%, 73%)
CMYK	cmyk(11.2%, 70.6%, 0%, 26.7%)
CIE-LAB	lab(44.84, 62.58, -47.75)
CIE-LCH	lch(44.84, 78.72, 322.65°)
OKLab	oklab(55.18% 0.1638 -0.1336)
OKLCH	oklch(55.18% 0.211 320.8)
XYZ	xyz(26.0607, 14.4286, 48.4164)
Luminance	0.1443 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A637BB #4CBB37

analogous

#6437BB #A637BB #BB378E

triadic

#A637BB #BBA637 #37BBA6

tetradic

#A637BB #BB6437 #4CBB37 #378EBB

square

#A637BB #BB6437 #4CBB37 #378EBB

split-complementary

#A637BB #8EBB37 #37BB64

monochromatic

#521B5C #7C298C #A637BB #BE5FD0 #D18EDE

Accessibility & contrast

On white

5.40

#A637BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#A637BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A637BB

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A637BB	#FFFFFF	#000000	##FFFFFF
##A637BB	1.00	5.40	3.89	5.40
#FFFFFF	5.40	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062BF

Deuteranopia (green-blind)

#456EB8

Tritanopia (blue-blind)

#A74F75

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #a637bb;
/* rgb */ color: rgb(166, 55, 187);
/* oklch */ color: oklch(55.2% 0.211 320.8);

Tailwind

colors: {
  custom: {
    50: '#c478d0',
    500: '#a637bb',
    950: '#000000',
  },
}

SCSS

$custom: #a637bb;
$custom-light: #c478d0;
$custom-dark: #000000;

JSON

{
  "hex": "#a637bb",
  "rgb": {
    "r": 166,
    "g": 55,
    "b": 187
  },
  "hsl": {
    "h": 290.455,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.55185,
    "c": 0.21139,
    "h": 320.8
  },
  "luminance": 0.14427
}

Semantic roles & 50–950 ramp

primary

#A637BB

secondary

#90C985

accent

#DE4A61

background

#FCF7FC

surface

#F8EEF9

border

#D1C9D2

text

#130A14

muted

#827C82

Preview Lab

Preview with #A637BB

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

Preview Lab → · Contrast checker → · Palette generator →