#57579B#57579B

#57579B is a mid, moderate blue. Relative luminance 0.112; OKLCH L 48.9% C 0.107 H 281.7°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#57579B
RGB	rgb(87, 87, 155)
HSL	hsl(240, 28%, 47%)
HSV	hsv(240, 44%, 61%)
CMYK	cmyk(43.9%, 43.9%, 0%, 39.2%)
CIE-LAB	lab(39.93, 18.20, -37.19)
CIE-LCH	lch(39.93, 41.40, 296.08°)
OKLab	oklab(48.92% 0.0217 -0.1051)
OKLCH	oklch(48.92% 0.107 281.7)
XYZ	xyz(13.2533, 11.2086, 32.4691)
Luminance	0.1121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#57579B #9B9B57

analogous

#57799B #57579B #79579B

triadic

#57579B #9B5757 #579B57

tetradic

#57579B #9B5779 #9B9B57 #579B79

square

#57579B #9B5779 #9B9B57 #579B79

split-complementary

#57579B #9B7957 #799B57

monochromatic

#2B2B4D #414174 #57579B #7B7BB5 #A2A2CB

Accessibility & contrast

On white

6.48

#57579B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#57579B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #57579B

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##57579B	#FFFFFF	#000000	##FFFFFF
##57579B	1.00	6.48	3.24	6.48
#FFFFFF	6.48	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E619E

Deuteranopia (green-blind)

#3A5C99

Tritanopia (blue-blind)

#426571

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #57579b;
/* rgb */ color: rgb(87, 87, 155);
/* oklch */ color: oklch(48.9% 0.107 281.7);

Tailwind

colors: {
  custom: {
    50: '#8a86b9',
    500: '#57579b',
    950: '#000000',
  },
}

SCSS

$custom: #57579b;
$custom-light: #8a86b9;
$custom-dark: #000000;

JSON

{
  "hex": "#57579b",
  "rgb": {
    "r": 87,
    "g": 87,
    "b": 155
  },
  "hsl": {
    "h": 240,
    "s": 28.099,
    "l": 47.451
  },
  "oklch": {
    "l": 0.4892,
    "c": 0.1073,
    "h": 281.7
  },
  "luminance": 0.11209
}

Semantic roles & 50–950 ramp

primary

#57579B

secondary

#B8B896

accent

#C463C4

background

#F8F8FB

surface

#F0EFF6

border

#CBCAD0

text

#0C0B11

muted

#7D7C80

Preview Lab

Preview with #57579B

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

Preview Lab → · Contrast checker → · Palette generator →