#5F57CB#5F57CB

#5F57CB is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.8% C 0.174 H 281.7°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#5F57CB
RGB	rgb(95, 87, 203)
HSL	hsl(244, 53%, 57%)
HSV	hsv(244, 57%, 80%)
CMYK	cmyk(53.2%, 57.1%, 0%, 20.4%)
CIE-LAB	lab(43.60, 34.98, -59.48)
CIE-LCH	lch(43.60, 69.00, 300.46°)
OKLab	oklab(52.8% 0.0354 -0.1703)
OKLCH	oklch(52.8% 0.174 281.7)
XYZ	xyz(18.9037, 13.5600, 58.1096)
Luminance	0.1356 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5F57CB #C3CB57

analogous

#5789CB #5F57CB #9957CB

triadic

#5F57CB #CB5F57 #57CB5F

tetradic

#5F57CB #CB5789 #C3CB57 #57CB99

square

#5F57CB #CB5789 #C3CB57 #57CB99

split-complementary

#5F57CB #CB9957 #89CB57

monochromatic

#2E2880 #3E36AF #5F57CB #8C86D9 #B8B4E8

Accessibility & contrast

On white

5.66

#5F57CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#5F57CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5F57CB

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5F57CB	#FFFFFF	#000000	##FFFFFF
##5F57CB	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BCF

Deuteranopia (green-blind)

#0063C9

Tritanopia (blue-blind)

#307288

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #5f57cb;
/* rgb */ color: rgb(95, 87, 203);
/* oklch */ color: oklch(52.8% 0.174 281.7);

Tailwind

colors: {
  custom: {
    50: '#9586dc',
    500: '#5f57cb',
    950: '#000000',
  },
}

SCSS

$custom: #5f57cb;
$custom-light: #9586dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5f57cb",
  "rgb": {
    "r": 95,
    "g": 87,
    "b": 203
  },
  "hsl": {
    "h": 244.138,
    "s": 52.727,
    "l": 56.863
  },
  "oklch": {
    "l": 0.52802,
    "c": 0.17396,
    "h": 281.7
  },
  "luminance": 0.13561
}

Semantic roles & 50–950 ramp

primary

#5F57CB

secondary

#D3D7A7

accent

#DC4CD2

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #5F57CB

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

Preview Lab → · Contrast checker → · Palette generator →