#5B71CF#5B71CF

#5B71CF is a mid, vivid blue. Relative luminance 0.185; OKLCH L 57.7% C 0.146 H 271.3°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX	#5B71CF
RGB	rgb(91, 113, 207)
HSL	hsl(229, 55%, 58%)
HSV	hsv(229, 56%, 81%)
CMYK	cmyk(56%, 45.4%, 0%, 18.8%)
CIE-LAB	lab(50.14, 19.45, -51.26)
CIE-LCH	lch(50.14, 54.82, 290.78°)
OKLab	oklab(57.74% 0.0032 -0.146)
OKLCH	oklch(57.74% 0.146 271.3)
XYZ	xyz(21.4783, 18.5378, 61.4657)
Luminance	0.1854 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B71CF #CFB95B

analogous

#5BABCF #5B71CF #7F5BCF

triadic

#5B71CF #CF5B71 #71CF5B

tetradic

#5B71CF #CF5BAB #CFB95B #5BCF7F

square

#5B71CF #CF5BAB #CFB95B #5BCF7F

split-complementary

#5B71CF #CF7F5B #ABCF5B

monochromatic

#283A88 #364EB7 #5B71CF #8A9ADD #BAC3EB

Accessibility & contrast

On white

4.46

#5B71CF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.71

#5B71CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B71CF

4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B71CF	#FFFFFF	#000000	##000000
##5B71CF	1.00	4.46	4.71	4.71
#FFFFFF	4.46	1.00	21.00	21.00
#000000	4.71	21.00	1.00	1.00
##000000	4.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#467DD3

Deuteranopia (green-blind)

#3773CD

Tritanopia (blue-blind)

#148696

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #5b71cf;
/* rgb */ color: rgb(91, 113, 207);
/* oklch */ color: oklch(57.7% 0.146 271.3);

Tailwind

colors: {
  custom: {
    50: '#9299de',
    500: '#5b71cf',
    950: '#000000',
  },
}

SCSS

$custom: #5b71cf;
$custom-light: #9299de;
$custom-dark: #000000;

JSON

{
  "hex": "#5b71cf",
  "rgb": {
    "r": 91,
    "g": 113,
    "b": 207
  },
  "hsl": {
    "h": 228.621,
    "s": 54.717,
    "l": 58.431
  },
  "oklch": {
    "l": 0.57736,
    "c": 0.14606,
    "h": 271.3
  },
  "luminance": 0.18539
}

Semantic roles & 50–950 ramp

primary

#5B71CF

secondary

#DAD1AC

accent

#C24ADE

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #5B71CF

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

Preview Lab → · Contrast checker → · Palette generator →