#5B57C8#5B57C8

#5B57C8 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 52.3% C 0.171 H 280.3°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#5B57C8
RGB	rgb(91, 87, 200)
HSL	hsl(242, 51%, 56%)
HSV	hsv(242, 57%, 78%)
CMYK	cmyk(54.5%, 56.5%, 0%, 21.6%)
CIE-LAB	lab(43.08, 33.26, -58.60)
CIE-LCH	lch(43.08, 67.38, 299.58°)
OKLab	oklab(52.27% 0.0305 -0.1678)
OKLCH	oklch(52.27% 0.171 280.3)
XYZ	xyz(18.1447, 13.2095, 56.2260)
Luminance	0.1321 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B57C8 #C4C857

analogous

#578CC8 #5B57C8 #9457C8

triadic

#5B57C8 #C85B57 #57C85B

tetradic

#5B57C8 #C8578C #C4C857 #57C894

square

#5B57C8 #C8578C #C4C857 #57C894

split-complementary

#5B57C8 #C89457 #8CC857

monochromatic

#2C297C #3C38AA #5B57C8 #8885D7 #B5B3E6

Accessibility & contrast

On white

5.77

#5B57C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#5B57C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B57C8

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B57C8	#FFFFFF	#000000	##FFFFFF
##5B57C8	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ACC

Deuteranopia (green-blind)

#0061C6

Tritanopia (blue-blind)

#287187

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #5b57c8;
/* rgb */ color: rgb(91, 87, 200);
/* oklch */ color: oklch(52.3% 0.171 280.3);

Tailwind

colors: {
  custom: {
    50: '#9286d9',
    500: '#5b57c8',
    950: '#000000',
  },
}

SCSS

$custom: #5b57c8;
$custom-light: #9286d9;
$custom-dark: #000000;

JSON

{
  "hex": "#5b57c8",
  "rgb": {
    "r": 91,
    "g": 87,
    "b": 200
  },
  "hsl": {
    "h": 242.124,
    "s": 50.673,
    "l": 56.275
  },
  "oklch": {
    "l": 0.52274,
    "c": 0.17059,
    "h": 280.3
  },
  "luminance": 0.13211
}

Semantic roles & 50–950 ramp

primary

#5B57C8

secondary

#D3D5A6

accent

#DA4ED5

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0E0B15

muted

#7E7C83

Preview Lab

Preview with #5B57C8

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

Preview Lab → · Contrast checker → · Palette generator →