#5B91E5#5B91E5

#5B91E5 is a light, vivid blue. Relative luminance 0.281; OKLCH L 65.7% C 0.139 H 258.9°. Best body text is #000000 at 6.63:1 contrast (WCAG AA passes).

Color values

HEX	#5B91E5
RGB	rgb(91, 145, 229)
HSL	hsl(217, 73%, 63%)
HSV	hsv(217, 60%, 90%)
CMYK	cmyk(60.3%, 36.7%, 0%, 10.2%)
CIE-LAB	lab(60.01, 7.36, -47.94)
CIE-LCH	lch(60.01, 48.50, 278.72°)
OKLab	oklab(65.72% -0.0266 -0.136)
OKLCH	oklch(65.72% 0.139 258.9)
XYZ	xyz(28.5777, 28.1295, 78.0371)
Luminance	0.2813 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B91E5 #E5AF5B

analogous

#5BD6E5 #5B91E5 #6A5BE5

triadic

#5B91E5 #E55B91 #91E55B

tetradic

#5B91E5 #E55BD6 #E5AF5B #5BE56A

square

#5B91E5 #E55BD6 #E5AF5B #5BE56A

split-complementary

#5B91E5 #E56A5B #D6E55B

monochromatic

#1B53AB #266EDD #5B91E5 #90B4ED #C5D8F6

Accessibility & contrast

On white

3.17

#5B91E5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.63

#5B91E5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B91E5

6.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B91E5	#FFFFFF	#000000	##000000
##5B91E5	1.00	3.17	6.63	6.63
#FFFFFF	3.17	1.00	21.00	21.00
#000000	6.63	21.00	1.00	1.00
##000000	6.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D98E8

Deuteranopia (green-blind)

#5B8BE3

Tritanopia (blue-blind)

#00A4B0

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #5b91e5;
/* rgb */ color: rgb(91, 145, 229);
/* oklch */ color: oklch(65.7% 0.139 258.9);

Tailwind

colors: {
  custom: {
    50: '#94b0ed',
    500: '#5b91e5',
    950: '#000000',
  },
}

SCSS

$custom: #5b91e5;
$custom-light: #94b0ed;
$custom-dark: #000000;

JSON

{
  "hex": "#5b91e5",
  "rgb": {
    "r": 91,
    "g": 145,
    "b": 229
  },
  "hsl": {
    "h": 216.522,
    "s": 72.632,
    "l": 62.745
  },
  "oklch": {
    "l": 0.65724,
    "c": 0.13854,
    "h": 258.9
  },
  "luminance": 0.28132
}

Semantic roles & 50–950 ramp

primary

#5B91E5

secondary

#E7D3B5

accent

#8811D5

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #5B91E5

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

Preview Lab → · Contrast checker → · Palette generator →