#5B71E9#5B71E9

#5B71E9 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 59.5% C 0.182 H 271.9°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#5B71E9
RGB	rgb(91, 113, 233)
HSL	hsl(231, 76%, 64%)
HSV	hsv(231, 61%, 91%)
CMYK	cmyk(60.9%, 51.5%, 0%, 8.6%)
CIE-LAB	lab(51.74, 28.04, -63.38)
CIE-LCH	lch(51.74, 69.30, 293.87°)
OKLab	oklab(59.46% 0.0061 -0.1817)
OKLCH	oklch(59.46% 0.182 271.9)
XYZ	xyz(24.9226, 19.9155, 79.6057)
Luminance	0.1992 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B71E9 #E9D35B

analogous

#5BB8E9 #5B71E9 #8C5BE9

triadic

#5B71E9 #E95B71 #71E95B

tetradic

#5B71E9 #E95BB8 #E9D35B #5BE98C

square

#5B71E9 #E95BB8 #E9D35B #5BE98C

split-complementary

#5B71E9 #E98C5B #B8E95B

monochromatic

#1830B2 #2542E2 #5B71E9 #91A0F0 #C7CEF7

Accessibility & contrast

On white

4.21

#5B71E9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#5B71E9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B71E9

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B71E9	#FFFFFF	#000000	##000000
##5B71E9	1.00	4.21	4.98	4.98
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A82ED

Deuteranopia (green-blind)

#0075E7

Tritanopia (blue-blind)

#008DA2

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #5b71e9;
/* rgb */ color: rgb(91, 113, 233);
/* oklch */ color: oklch(59.5% 0.182 271.9);

Tailwind

colors: {
  custom: {
    50: '#9699f1',
    500: '#5b71e9',
    950: '#000000',
  },
}

SCSS

$custom: #5b71e9;
$custom-light: #9699f1;
$custom-dark: #000000;

JSON

{
  "hex": "#5b71e9",
  "rgb": {
    "r": 91,
    "g": 113,
    "b": 233
  },
  "hsl": {
    "h": 230.704,
    "s": 76.344,
    "l": 63.529
  },
  "oklch": {
    "l": 0.59463,
    "c": 0.18176,
    "h": 271.9
  },
  "luminance": 0.19918
}

Semantic roles & 50–950 ramp

primary

#5B71E9

secondary

#E9E1B7

accent

#B90DD9

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0F0D17

muted

#7E7E85

Preview Lab

Preview with #5B71E9

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

Preview Lab → · Contrast checker → · Palette generator →