#231571#231571

#231571 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.1% C 0.146 H 279.1°. Best body text is #FFFFFF at 14.82:1 contrast (WCAG AA passes).

Color values

HEX	#231571
RGB	rgb(35, 21, 113)
HSL	hsl(249, 69%, 26%)
HSV	hsv(249, 81%, 44%)
CMYK	cmyk(69%, 81.4%, 0%, 55.7%)
CIE-LAB	lab(15.93, 35.43, -50.08)
CIE-LCH	lch(15.93, 61.34, 305.28°)
OKLab	oklab(29.1% 0.0231 -0.1446)
OKLCH	oklch(29.1% 0.146 279.1)
XYZ	xyz(3.9410, 2.0856, 15.8145)
Luminance	0.0209 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231571 #637115

analogous

#153571 #231571 #511571

triadic

#231571 #712315 #157123

tetradic

#231571 #711535 #637115 #157151

square

#231571 #711535 #637115 #157151

split-complementary

#231571 #715115 #357115

monochromatic

#08051A #130B3D #231571 #331FA5 #4429D7

Accessibility & contrast

On white

14.82

#231571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#231571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231571

14.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231571	#FFFFFF	#000000	##FFFFFF
##231571	1.00	14.82	1.42	14.82
#FFFFFF	14.82	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B74

Deuteranopia (green-blind)

#00246F

Tritanopia (blue-blind)

#003043

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #231571;
/* rgb */ color: rgb(35, 21, 113);
/* oklch */ color: oklch(29.1% 0.146 279.1);

Tailwind

colors: {
  custom: {
    50: '#6a559b',
    500: '#231571',
    950: '#000000',
  },
}

SCSS

$custom: #231571;
$custom-light: #6a559b;
$custom-dark: #000000;

JSON

{
  "hex": "#231571",
  "rgb": {
    "r": 35,
    "g": 21,
    "b": 113
  },
  "hsl": {
    "h": 249.13,
    "s": 68.657,
    "l": 26.275
  },
  "oklch": {
    "l": 0.29097,
    "c": 0.14645,
    "h": 279.1
  },
  "luminance": 0.02086
}

Semantic roles & 50–950 ramp

primary

#231571

secondary

#97A73B

accent

#EB3CD1

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #231571

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

Preview Lab → · Contrast checker → · Palette generator →