#5751CB#5751CB

#5751CB is a mid, vivid blue. Relative luminance 0.122; OKLCH L 51.1% C 0.183 H 279.9°. Best body text is #FFFFFF at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#5751CB
RGB	rgb(87, 81, 203)
HSL	hsl(243, 54%, 56%)
HSV	hsv(243, 60%, 80%)
CMYK	cmyk(57.1%, 60.1%, 0%, 20.4%)
CIE-LAB	lab(41.57, 37.12, -62.80)
CIE-LCH	lch(41.57, 72.95, 300.59°)
OKLab	oklab(51.15% 0.0316 -0.1803)
OKLCH	oklch(51.15% 0.183 279.9)
XYZ	xyz(17.6490, 12.2217, 57.9173)
Luminance	0.1222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5751CB #C5CB51

analogous

#5188CB #5751CB #9451CB

triadic

#5751CB #CB5751 #51CB57

tetradic

#5751CB #CB5188 #C5CB51 #51CB94

square

#5751CB #CB5188 #C5CB51 #51CB94

split-complementary

#5751CB #CB9451 #88CB51

monochromatic

#29257C #3933AC #5751CB #8480D9 #B2AFE7

Accessibility & contrast

On white

6.10

#5751CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.44

#5751CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5751CB

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5751CB	#FFFFFF	#000000	##FFFFFF
##5751CB	1.00	6.10	3.44	6.10
#FFFFFF	6.10	1.00	21.00	1.00
#000000	3.44	21.00	1.00	21.00
##FFFFFF	6.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0067CF

Deuteranopia (green-blind)

#005DC9

Tritanopia (blue-blind)

#136E86

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #5751cb;
/* rgb */ color: rgb(87, 81, 203);
/* oklch */ color: oklch(51.1% 0.183 279.9);

Tailwind

colors: {
  custom: {
    50: '#9182dc',
    500: '#5751cb',
    950: '#000000',
  },
}

SCSS

$custom: #5751cb;
$custom-light: #9182dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5751cb",
  "rgb": {
    "r": 87,
    "g": 81,
    "b": 203
  },
  "hsl": {
    "h": 242.951,
    "s": 53.982,
    "l": 55.686
  },
  "oklch": {
    "l": 0.51149,
    "c": 0.18308,
    "h": 279.9
  },
  "luminance": 0.12223
}

Semantic roles & 50–950 ramp

primary

#5751CB

secondary

#D3D5A3

accent

#DD4AD6

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0A15

muted

#7E7C83

Preview Lab

Preview with #5751CB

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

Preview Lab → · Contrast checker → · Palette generator →