#5757CB#5757CB

#5757CB is a mid, vivid blue. Relative luminance 0.132; OKLCH L 52.2% C 0.175 H 278.4°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#5757CB
RGB	rgb(87, 87, 203)
HSL	hsl(240, 53%, 57%)
HSV	hsv(240, 57%, 80%)
CMYK	cmyk(57.1%, 57.1%, 0%, 20.4%)
CIE-LAB	lab(42.99, 33.46, -60.48)
CIE-LCH	lch(42.99, 69.12, 298.95°)
OKLab	oklab(52.2% 0.0257 -0.1735)
OKLCH	oklch(52.2% 0.175 278.4)
XYZ	xyz(18.1147, 13.1532, 58.0726)
Luminance	0.1315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5757CB #CBCB57

analogous

#5791CB #5757CB #9157CB

triadic

#5757CB #CB5757 #57CB57

tetradic

#5757CB #CB5791 #CBCB57 #57CB91

square

#5757CB #CB5791 #CBCB57 #57CB91

split-complementary

#5757CB #CB9157 #91CB57

monochromatic

#282880 #3636AF #5757CB #8686D9 #B4B4E8

Accessibility & contrast

On white

5.78

#5757CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#5757CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5757CB

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5757CB	#FFFFFF	#000000	##FFFFFF
##5757CB	1.00	5.78	3.63	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ACF

Deuteranopia (green-blind)

#0061C9

Tritanopia (blue-blind)

#117288

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #5757cb;
/* rgb */ color: rgb(87, 87, 203);
/* oklch */ color: oklch(52.2% 0.175 278.4);

Tailwind

colors: {
  custom: {
    50: '#9086dc',
    500: '#5757cb',
    950: '#000000',
  },
}

SCSS

$custom: #5757cb;
$custom-light: #9086dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5757cb",
  "rgb": {
    "r": 87,
    "g": 87,
    "b": 203
  },
  "hsl": {
    "h": 240,
    "s": 52.727,
    "l": 56.863
  },
  "oklch": {
    "l": 0.52203,
    "c": 0.17539,
    "h": 278.4
  },
  "luminance": 0.13154
}

Semantic roles & 50–950 ramp

primary

#5757CB

secondary

#D7D7A7

accent

#DC4CDC

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #5757CB

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

Preview Lab → · Contrast checker → · Palette generator →