#5B91E4#5B91E4

#5B91E4 is a light, vivid blue. Relative luminance 0.281; OKLCH L 65.7% C 0.137 H 258.7°. Best body text is #000000 at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#5B91E4
RGB	rgb(91, 145, 228)
HSL	hsl(216, 72%, 63%)
HSV	hsv(216, 60%, 89%)
CMYK	cmyk(60.1%, 36.4%, 0%, 10.6%)
CIE-LAB	lab(59.96, 7.03, -47.46)
CIE-LCH	lch(59.96, 47.98, 278.42°)
OKLab	oklab(65.67% -0.0268 -0.1346)
OKLCH	oklch(65.67% 0.137 258.7)
XYZ	xyz(28.4384, 28.0739, 77.3039)
Luminance	0.2808 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B91E4 #E4AE5B

analogous

#5BD6E4 #5B91E4 #695BE4

triadic

#5B91E4 #E45B91 #91E45B

tetradic

#5B91E4 #E45BD6 #E4AE5B #5BE469

square

#5B91E4 #E45BD6 #E4AE5B #5BE469

split-complementary

#5B91E4 #E4695B #D6E45B

monochromatic

#1C53A9 #266EDB #5B91E4 #90B4ED #C4D7F5

Accessibility & contrast

On white

3.17

#5B91E4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.62

#5B91E4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B91E4

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B91E4	#FFFFFF	#000000	##000000
##5B91E4	1.00	3.17	6.62	6.62
#FFFFFF	3.17	1.00	21.00	21.00
#000000	6.62	21.00	1.00	1.00
##000000	6.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E97E7

Deuteranopia (green-blind)

#5B8BE2

Tritanopia (blue-blind)

#00A4B0

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #5b91e4;
/* rgb */ color: rgb(91, 145, 228);
/* oklch */ color: oklch(65.7% 0.137 258.7);

Tailwind

colors: {
  custom: {
    50: '#94b0ed',
    500: '#5b91e4',
    950: '#000000',
  },
}

SCSS

$custom: #5b91e4;
$custom-light: #94b0ed;
$custom-dark: #000000;

JSON

{
  "hex": "#5b91e4",
  "rgb": {
    "r": 91,
    "g": 145,
    "b": 228
  },
  "hsl": {
    "h": 216.35,
    "s": 71.728,
    "l": 62.549
  },
  "oklch": {
    "l": 0.65669,
    "c": 0.13722,
    "h": 258.7
  },
  "luminance": 0.28076
}

Semantic roles & 50–950 ramp

primary

#5B91E4

secondary

#E6D3B4

accent

#8712D4

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #5B91E4

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

Preview Lab → · Contrast checker → · Palette generator →