#5B88EB#5B88EB

#5B88EB is a light, vivid blue. Relative luminance 0.258; OKLCH L 64.2% C 0.157 H 264.1°. Best body text is #000000 at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#5B88EB
RGB	rgb(91, 136, 235)
HSL	hsl(221, 78%, 64%)
HSV	hsv(221, 61%, 92%)
CMYK	cmyk(61.3%, 42.1%, 0%, 7.8%)
CIE-LAB	lab(57.87, 14.70, -54.66)
CIE-LCH	lch(57.87, 56.60, 285.06°)
OKLab	oklab(64.18% -0.0161 -0.1557)
OKLCH	oklch(64.18% 0.157 264.1)
XYZ	xyz(28.1087, 25.8281, 82.0852)
Luminance	0.2583 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B88EB #EBBE5B

analogous

#5BD0EB #5B88EB #765BEB

triadic

#5B88EB #EB5B88 #88EB5B

tetradic

#5B88EB #EB5BD0 #EBBE5B #5BEB76

square

#5B88EB #EB5BD0 #EBBE5B #5BEB76

split-complementary

#5B88EB #EB765B #D0EB5B

monochromatic

#1648B5 #2460E4 #5B88EB #92B0F2 #C8D7F8

Accessibility & contrast

On white

3.41

#5B88EB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.17

#5B88EB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B88EB

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B88EB	#FFFFFF	#000000	##000000
##5B88EB	1.00	3.41	6.17	6.17
#FFFFFF	3.41	1.00	21.00	21.00
#000000	6.17	21.00	1.00	1.00
##000000	6.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B92EF

Deuteranopia (green-blind)

#4685E9

Tritanopia (blue-blind)

#009EAE

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #5b88eb;
/* rgb */ color: rgb(91, 136, 235);
/* oklch */ color: oklch(64.2% 0.157 264.1);

Tailwind

colors: {
  custom: {
    50: '#95aaf2',
    500: '#5b88eb',
    950: '#000000',
  },
}

SCSS

$custom: #5b88eb;
$custom-light: #95aaf2;
$custom-dark: #000000;

JSON

{
  "hex": "#5b88eb",
  "rgb": {
    "r": 91,
    "g": 136,
    "b": 235
  },
  "hsl": {
    "h": 221.25,
    "s": 78.261,
    "l": 63.922
  },
  "oklch": {
    "l": 0.64177,
    "c": 0.15657,
    "h": 264.1
  },
  "luminance": 0.25831
}

Semantic roles & 50–950 ramp

primary

#5B88EB

secondary

#EADAB8

accent

#9A0BDB

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #5B88EB

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

Preview Lab → · Contrast checker → · Palette generator →