#5757BB#5757BB

#5757BB is a mid, vivid blue. Relative luminance 0.124; OKLCH L 51.0% C 0.154 H 279.5°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#5757BB
RGB	rgb(87, 87, 187)
HSL	hsl(240, 42%, 54%)
HSV	hsv(240, 53%, 73%)
CMYK	cmyk(53.5%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(41.89, 28.29, -52.98)
CIE-LCH	lch(41.89, 60.06, 298.11°)
OKLab	oklab(51.03% 0.0253 -0.1514)
OKLCH	oklch(51.03% 0.154 279.5)
XYZ	xyz(16.3055, 12.4295, 48.5440)
Luminance	0.1243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5757BB #BBBB57

analogous

#5789BB #5757BB #8957BB

triadic

#5757BB #BB5757 #57BB57

tetradic

#5757BB #BB5789 #BBBB57 #57BB89

square

#5757BB #BB5789 #BBBB57 #57BB89

split-complementary

#5757BB #BB8957 #89BB57

monochromatic

#2C2C6C #3D3D97 #5757BB #8383CD #AEAEDE

Accessibility & contrast

On white

6.02

#5757BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#5757BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5757BB

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5757BB	#FFFFFF	#000000	##FFFFFF
##5757BB	1.00	6.02	3.49	6.02
#FFFFFF	6.02	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E67BE

Deuteranopia (green-blind)

#0C5FB9

Tritanopia (blue-blind)

#2A6E80

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #5757bb;
/* rgb */ color: rgb(87, 87, 187);
/* oklch */ color: oklch(51.0% 0.154 279.5);

Tailwind

colors: {
  custom: {
    50: '#8e86d0',
    500: '#5757bb',
    950: '#000000',
  },
}

SCSS

$custom: #5757bb;
$custom-light: #8e86d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5757bb",
  "rgb": {
    "r": 87,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 240,
    "s": 42.373,
    "l": 53.725
  },
  "oklch": {
    "l": 0.51031,
    "c": 0.15351,
    "h": 279.5
  },
  "luminance": 0.1243
}

Semantic roles & 50–950 ramp

primary

#5757BB

secondary

#CCCCA2

accent

#D256D2

background

#F9F8FC

surface

#F1EFF9

border

#CBCAD2

text

#0D0B14

muted

#7E7C82

Preview Lab

Preview with #5757BB

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

Preview Lab → · Contrast checker → · Palette generator →