#5F57BB#5F57BB

#5F57BB is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.7% C 0.152 H 283.3°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#5F57BB
RGB	rgb(95, 87, 187)
HSL	hsl(245, 42%, 54%)
HSV	hsv(245, 53%, 73%)
CMYK	cmyk(49.2%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(42.52, 30.01, -51.94)
CIE-LCH	lch(42.52, 59.99, 300.02°)
OKLab	oklab(51.65% 0.035 -0.1481)
OKLCH	oklch(51.65% 0.152 283.3)
XYZ	xyz(17.0945, 12.8363, 48.5810)
Luminance	0.1284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5F57BB #B3BB57

analogous

#5781BB #5F57BB #9157BB

triadic

#5F57BB #BB5F57 #57BB5F

tetradic

#5F57BB #BB5781 #B3BB57 #57BB91

square

#5F57BB #BB5781 #B3BB57 #57BB91

split-complementary

#5F57BB #BB9157 #81BB57

monochromatic

#312C6C #453D97 #5F57BB #8883CD #B2AEDE

Accessibility & contrast

On white

5.89

#5F57BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#5F57BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5F57BB

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5F57BB	#FFFFFF	#000000	##FFFFFF
##5F57BB	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2268BE

Deuteranopia (green-blind)

#1B61B9

Tritanopia (blue-blind)

#3E6D80

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #5f57bb;
/* rgb */ color: rgb(95, 87, 187);
/* oklch */ color: oklch(51.7% 0.152 283.3);

Tailwind

colors: {
  custom: {
    50: '#9386d0',
    500: '#5f57bb',
    950: '#000000',
  },
}

SCSS

$custom: #5f57bb;
$custom-light: #9386d0;
$custom-dark: #000000;

JSON

{
  "hex": "#5f57bb",
  "rgb": {
    "r": 95,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 244.8,
    "s": 42.373,
    "l": 53.725
  },
  "oklch": {
    "l": 0.51655,
    "c": 0.15223,
    "h": 283.3
  },
  "luminance": 0.12837
}

Semantic roles & 50–950 ramp

primary

#5F57BB

secondary

#C9CCA2

accent

#D256C8

background

#F9F8FC

surface

#F2EFF9

border

#CCCAD2

text

#0E0B14

muted

#7E7C82

Preview Lab

Preview with #5F57BB

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

Preview Lab → · Contrast checker → · Palette generator →