#5591EB#5591EB

#5591EB is a light, vivid blue. Relative luminance 0.282; OKLCH L 65.8% C 0.149 H 258.3°. Best body text is #000000 at 6.64:1 contrast (WCAG AA passes).

Color values

HEX	#5591EB
RGB	rgb(85, 145, 235)
HSL	hsl(216, 79%, 63%)
HSV	hsv(216, 64%, 92%)
CMYK	cmyk(63.8%, 38.3%, 0%, 7.8%)
CIE-LAB	lab(60.05, 8.28, -51.21)
CIE-LCH	lch(60.05, 51.88, 279.18°)
OKLab	oklab(65.79% -0.0301 -0.1456)
OKLCH	oklch(65.79% 0.149 258.3)
XYZ	xyz(28.8618, 28.1775, 82.4989)
Luminance	0.2818 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5591EB #EBAF55

analogous

#55DCEB #5591EB #6455EB

triadic

#5591EB #EB5591 #91EB55

tetradic

#5591EB #EB55DC #EBAF55 #55EB64

square

#5591EB #EB55DC #EBAF55 #55EB64

split-complementary

#5591EB #EB6455 #DCEB55

monochromatic

#1553B1 #1E6EE5 #5591EB #8CB4F1 #C3D8F8

Accessibility & contrast

On white

3.16

#5591EB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.64

#5591EB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5591EB

6.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5591EB	#FFFFFF	#000000	##000000
##5591EB	1.00	3.16	6.64	6.64
#FFFFFF	3.16	1.00	21.00	21.00
#000000	6.64	21.00	1.00	1.00
##000000	6.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6998EF

Deuteranopia (green-blind)

#548AE9

Tritanopia (blue-blind)

#00A6B3

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #5591eb;
/* rgb */ color: rgb(85, 145, 235);
/* oklch */ color: oklch(65.8% 0.149 258.3);

Tailwind

colors: {
  custom: {
    50: '#92b0f2',
    500: '#5591eb',
    950: '#000000',
  },
}

SCSS

$custom: #5591eb;
$custom-light: #92b0f2;
$custom-dark: #000000;

JSON

{
  "hex": "#5591eb",
  "rgb": {
    "r": 85,
    "g": 145,
    "b": 235
  },
  "hsl": {
    "h": 216,
    "s": 78.947,
    "l": 62.745
  },
  "oklch": {
    "l": 0.65786,
    "c": 0.14871,
    "h": 258.3
  },
  "luminance": 0.2818
}

Semantic roles & 50–950 ramp

primary

#5591EB

secondary

#E9D3B3

accent

#880ADB

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #5591EB

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

Preview Lab → · Contrast checker → · Palette generator →