#5591F3#5591F3

#5591F3 is a light, vivid blue. Relative luminance 0.287; OKLCH L 66.3% C 0.159 H 259.7°. Best body text is #000000 at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#5591F3
RGB	rgb(85, 145, 243)
HSL	hsl(217, 87%, 64%)
HSV	hsv(217, 65%, 95%)
CMYK	cmyk(65%, 40.3%, 0%, 4.7%)
CIE-LAB	lab(60.47, 10.98, -54.96)
CIE-LCH	lch(60.47, 56.04, 281.30°)
OKLab	oklab(66.25% -0.0284 -0.1566)
OKLCH	oklch(66.25% 0.159 259.7)
XYZ	xyz(30.0436, 28.6502, 88.7234)
Luminance	0.2865 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5591F3 #F3B755

analogous

#55E0F3 #5591F3 #6855F3

triadic

#5591F3 #F35591 #91F355

tetradic

#5591F3 #F355E0 #F3B755 #55F368

square

#5591F3 #F355E0 #F3B755 #55F368

split-complementary

#5591F3 #F36855 #E0F355

monochromatic

#0E51C0 #1C6CEF #5591F3 #8EB6F7 #C7DBFB

Accessibility & contrast

On white

3.12

#5591F3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.73

#5591F3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5591F3

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5591F3	#FFFFFF	#000000	##000000
##5591F3	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)

#649AF7

Deuteranopia (green-blind)

#4C8BF1

Tritanopia (blue-blind)

#00A7B6

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #5591f3;
/* rgb */ color: rgb(85, 145, 243);
/* oklch */ color: oklch(66.3% 0.159 259.7);

Tailwind

colors: {
  custom: {
    50: '#94b0f7',
    500: '#5591f3',
    950: '#000000',
  },
}

SCSS

$custom: #5591f3;
$custom-light: #94b0f7;
$custom-dark: #000000;

JSON

{
  "hex": "#5591f3",
  "rgb": {
    "r": 85,
    "g": 145,
    "b": 243
  },
  "hsl": {
    "h": 217.215,
    "s": 86.813,
    "l": 64.314
  },
  "oklch": {
    "l": 0.66251,
    "c": 0.15916,
    "h": 259.7
  },
  "luminance": 0.28653
}

Semantic roles & 50–950 ramp

primary

#5591F3

secondary

#EDD8B6

accent

#8E02E3

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #5591F3

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

Preview Lab → · Contrast checker → · Palette generator →