#575BB1#575BB1

#575BB1 is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.1% C 0.134 H 278.5°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#575BB1
RGB	rgb(87, 91, 177)
HSL	hsl(237, 37%, 52%)
HSV	hsv(237, 51%, 69%)
CMYK	cmyk(50.8%, 48.6%, 0%, 30.6%)
CIE-LAB	lab(42.28, 22.58, -46.49)
CIE-LCH	lch(42.28, 51.69, 295.90°)
OKLab	oklab(51.12% 0.0199 -0.1323)
OKLCH	oklch(51.12% 0.134 278.5)
XYZ	xyz(15.6049, 12.6818, 43.2120)
Luminance	0.1268 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#575BB1 #B1AD57

analogous

#5788B1 #575BB1 #8057B1

triadic

#575BB1 #B1575B #5BB157

tetradic

#575BB1 #B15788 #B1AD57 #57B180

square

#575BB1 #B15788 #B1AD57 #57B180

split-complementary

#575BB1 #B18057 #88B157

monochromatic

#2D2F61 #40448A #575BB1 #8184C4 #ABADD8

Accessibility & contrast

On white

5.94

#575BB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#575BB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #575BB1

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##575BB1	#FFFFFF	#000000	##FFFFFF
##575BB1	1.00	5.94	3.54	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3467B4

Deuteranopia (green-blind)

#2C60AF

Tritanopia (blue-blind)

#336E7D

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #575bb1;
/* rgb */ color: rgb(87, 91, 177);
/* oklch */ color: oklch(51.1% 0.134 278.5);

Tailwind

colors: {
  custom: {
    50: '#8c89c9',
    500: '#575bb1',
    950: '#000000',
  },
}

SCSS

$custom: #575bb1;
$custom-light: #8c89c9;
$custom-dark: #000000;

JSON

{
  "hex": "#575bb1",
  "rgb": {
    "r": 87,
    "g": 91,
    "b": 177
  },
  "hsl": {
    "h": 237.333,
    "s": 36.585,
    "l": 51.765
  },
  "oklch": {
    "l": 0.51119,
    "c": 0.1338,
    "h": 278.5
  },
  "luminance": 0.12683
}

Semantic roles & 50–950 ramp

primary

#575BB1

secondary

#C6C49E

accent

#C85BCD

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0D0B13

muted

#7D7C82

Preview Lab

Preview with #575BB1

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

Preview Lab → · Contrast checker → · Palette generator →