#631B71#631B71

#631B71 is a dark, vivid purple. Relative luminance 0.046; OKLCH L 37.8% C 0.149 H 320.6°. Best body text is #FFFFFF at 10.90:1 contrast (WCAG AA passes).

Color values

HEX	#631B71
RGB	rgb(99, 27, 113)
HSL	hsl(290, 61%, 27%)
HSV	hsv(290, 76%, 44%)
CMYK	cmyk(12.4%, 76.1%, 0%, 55.7%)
CIE-LAB	lab(25.65, 44.22, -33.87)
CIE-LCH	lch(25.65, 55.70, 322.55°)
OKLab	oklab(37.85% 0.1153 -0.0948)
OKLCH	oklch(37.85% 0.149 320.6)
XYZ	xyz(8.5178, 4.6292, 16.0644)
Luminance	0.0463 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631B71 #29711B

analogous

#381B71 #631B71 #711B54

triadic

#631B71 #71631B #1B7163

tetradic

#631B71 #71381B #29711B #1B5471

square

#631B71 #71381B #29711B #1B5471

split-complementary

#631B71 #54711B #1B7138

monochromatic

#160619 #380F40 #631B71 #8E27A2 #B637CF

Accessibility & contrast

On white

10.90

#631B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#631B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631B71

10.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631B71	#FFFFFF	#000000	##FFFFFF
##631B71	1.00	10.90	1.93	10.90
#FFFFFF	10.90	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003873

Deuteranopia (green-blind)

#243F6F

Tritanopia (blue-blind)

#642C44

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #631b71;
/* rgb */ color: rgb(99, 27, 113);
/* oklch */ color: oklch(37.8% 0.149 320.6);

Tailwind

colors: {
  custom: {
    50: '#925f9a',
    500: '#631b71',
    950: '#000000',
  },
}

SCSS

$custom: #631b71;
$custom-light: #925f9a;
$custom-dark: #000000;

JSON

{
  "hex": "#631b71",
  "rgb": {
    "r": 99,
    "g": 27,
    "b": 113
  },
  "hsl": {
    "h": 290.233,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.37849,
    "c": 0.14932,
    "h": 320.6
  },
  "luminance": 0.04629
}

Semantic roles & 50–950 ramp

primary

#631B71

secondary

#52A642

accent

#E5435E

background

#F9F5F9

surface

#F2EAF2

border

#CCC6CC

text

#0D050E

muted

#7E797E

Preview Lab

Preview with #631B71

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

Preview Lab → · Contrast checker → · Palette generator →