#57539B#57539B

#57539B is a mid, moderate blue. Relative luminance 0.106; OKLCH L 48.1% C 0.113 H 283.8°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#57539B
RGB	rgb(87, 83, 155)
HSL	hsl(243, 30%, 47%)
HSV	hsv(243, 46%, 61%)
CMYK	cmyk(43.9%, 46.5%, 0%, 39.2%)
CIE-LAB	lab(38.86, 20.73, -38.89)
CIE-LCH	lch(38.86, 44.07, 298.07°)
OKLab	oklab(48.11% 0.027 -0.1101)
OKLCH	oklch(48.11% 0.113 283.8)
XYZ	xyz(12.9384, 10.5788, 32.3642)
Luminance	0.1058 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57539B #979B53

analogous

#53739B #57539B #7B539B

triadic

#57539B #9B5753 #539B57

tetradic

#57539B #9B5373 #979B53 #539B7B

square

#57539B #9B5373 #979B53 #539B7B

split-complementary

#57539B #9B7B53 #739B53

monochromatic

#2A284B #413E73 #57539B #7976B5 #A09ECB

Accessibility & contrast

On white

6.74

#57539B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#57539B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #57539B

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57539B	#FFFFFF	#000000	##FFFFFF
##57539B	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#375E9E

Deuteranopia (green-blind)

#345999

Tritanopia (blue-blind)

#42626F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #57539b;
/* rgb */ color: rgb(87, 83, 155);
/* oklch */ color: oklch(48.1% 0.113 283.8);

Tailwind

colors: {
  custom: {
    50: '#8a83b9',
    500: '#57539b',
    950: '#000000',
  },
}

SCSS

$custom: #57539b;
$custom-light: #8a83b9;
$custom-dark: #000000;

JSON

{
  "hex": "#57539b",
  "rgb": {
    "r": 87,
    "g": 83,
    "b": 155
  },
  "hsl": {
    "h": 243.333,
    "s": 30.252,
    "l": 46.667
  },
  "oklch": {
    "l": 0.4811,
    "c": 0.11333,
    "h": 283.8
  },
  "luminance": 0.10579
}

Semantic roles & 50–950 ramp

primary

#57539B

secondary

#B6B892

accent

#C661C1

background

#F8F8FB

surface

#F0EFF6

border

#CBCAD0

text

#0C0A11

muted

#7D7C80

Preview Lab

Preview with #57539B

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

Preview Lab → · Contrast checker → · Palette generator →