#5B91EE#5B91EE

#5B91EE is a light, vivid blue. Relative luminance 0.286; OKLCH L 66.2% C 0.150 H 260.6°. Best body text is #000000 at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#5B91EE
RGB	rgb(91, 145, 238)
HSL	hsl(218, 81%, 65%)
HSV	hsv(218, 62%, 93%)
CMYK	cmyk(61.8%, 39.1%, 0%, 6.7%)
CIE-LAB	lab(60.47, 10.33, -52.19)
CIE-LCH	lch(60.47, 53.20, 281.19°)
OKLab	oklab(66.23% -0.0246 -0.1484)
OKLCH	oklch(66.23% 0.15 260.6)
XYZ	xyz(29.8670, 28.6453, 84.8275)
Luminance	0.2865 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B91EE #EEB85B

analogous

#5BDBEE #5B91EE #6F5BEE

triadic

#5B91EE #EE5B91 #91EE5B

tetradic

#5B91EE #EE5BDB #EEB85B #5BEE6F

square

#5B91EE #EE5BDB #EEB85B #5BEE6F

split-complementary

#5B91EE #EE6F5B #DBEE5B

monochromatic

#1351BB #246CE8 #5B91EE #92B6F4 #CADBF9

Accessibility & contrast

On white

3.12

#5B91EE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.73

#5B91EE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B91EE

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B91EE	#FFFFFF	#000000	##000000
##5B91EE	1.00	3.12	6.73	6.73
#FFFFFF	3.12	1.00	21.00	21.00
#000000	6.73	21.00	1.00	1.00
##000000	6.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6899F2

Deuteranopia (green-blind)

#538CEC

Tritanopia (blue-blind)

#00A6B4

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #5b91ee;
/* rgb */ color: rgb(91, 145, 238);
/* oklch */ color: oklch(66.2% 0.150 260.6);

Tailwind

colors: {
  custom: {
    50: '#96b0f4',
    500: '#5b91ee',
    950: '#000000',
  },
}

SCSS

$custom: #5b91ee;
$custom-light: #96b0f4;
$custom-dark: #000000;

JSON

{
  "hex": "#5b91ee",
  "rgb": {
    "r": 91,
    "g": 145,
    "b": 238
  },
  "hsl": {
    "h": 217.959,
    "s": 81.215,
    "l": 64.51
  },
  "oklch": {
    "l": 0.66233,
    "c": 0.15042,
    "h": 260.6
  },
  "luminance": 0.28648
}

Semantic roles & 50–950 ramp

primary

#5B91EE

secondary

#ECD9B9

accent

#8F08DE

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #5B91EE

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

Preview Lab → · Contrast checker → · Palette generator →