#5B71CC#5B71CC

#5B71CC is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.5% C 0.142 H 271.1°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#5B71CC
RGB	rgb(91, 113, 204)
HSL	hsl(228, 53%, 58%)
HSV	hsv(228, 55%, 80%)
CMYK	cmyk(55.4%, 44.6%, 0%, 20%)
CIE-LAB	lab(49.97, 18.47, -49.82)
CIE-LCH	lch(49.97, 53.14, 290.35°)
OKLab	oklab(57.55% 0.0028 -0.1418)
OKLCH	oklch(57.55% 0.142 271.1)
XYZ	xyz(21.1150, 18.3925, 59.5525)
Luminance	0.1839 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B71CC #CCB65B

analogous

#5BA9CC #5B71CC #7E5BCC

triadic

#5B71CC #CC5B71 #71CC5B

tetradic

#5B71CC #CC5BA9 #CCB65B #5BCC7E

square

#5B71CC #CC5BA9 #CCB65B #5BCC7E

split-complementary

#5B71CC #CC7E5B #A9CC5B

monochromatic

#293B84 #374FB2 #5B71CC #8A99DB #B8C2E9

Accessibility & contrast

On white

4.49

#5B71CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#5B71CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B71CC

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B71CC	#FFFFFF	#000000	##000000
##5B71CC	1.00	4.49	4.68	4.68
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#497CCF

Deuteranopia (green-blind)

#3A72CA

Tritanopia (blue-blind)

#1B8594

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #5b71cc;
/* rgb */ color: rgb(91, 113, 204);
/* oklch */ color: oklch(57.5% 0.142 271.1);

Tailwind

colors: {
  custom: {
    50: '#9199dc',
    500: '#5b71cc',
    950: '#000000',
  },
}

SCSS

$custom: #5b71cc;
$custom-light: #9199dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5b71cc",
  "rgb": {
    "r": 91,
    "g": 113,
    "b": 204
  },
  "hsl": {
    "h": 228.319,
    "s": 52.558,
    "l": 57.843
  },
  "oklch": {
    "l": 0.57548,
    "c": 0.14183,
    "h": 271.1
  },
  "luminance": 0.18394
}

Semantic roles & 50–950 ramp

primary

#5B71CC

secondary

#D8CFAB

accent

#C04CDC

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #5B71CC

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

Preview Lab → · Contrast checker → · Palette generator →