#5591EF#5591EF

#5591EF is a light, vivid blue. Relative luminance 0.284; OKLCH L 66.0% C 0.154 H 259.1°. Best body text is #000000 at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#5591EF
RGB	rgb(85, 145, 239)
HSL	hsl(217, 83%, 64%)
HSV	hsv(217, 64%, 94%)
CMYK	cmyk(64.4%, 39.3%, 0%, 6.3%)
CIE-LAB	lab(60.26, 9.62, -53.09)
CIE-LCH	lch(60.26, 53.96, 280.27°)
OKLab	oklab(66.02% -0.0292 -0.1511)
OKLCH	oklch(66.02% 0.154 259.1)
XYZ	xyz(29.4461, 28.4112, 85.5767)
Luminance	0.2841 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5591EF #EFB355

analogous

#55DEEF #5591EF #6655EF

triadic

#5591EF #EF5591 #91EF55

tetradic

#5591EF #EF55DE #EFB355 #55EF66

square

#5591EF #EF55DE #EFB355 #55EF66

split-complementary

#5591EF #EF6655 #DEEF55

monochromatic

#1152B8 #1D6DEA #5591EF #8DB5F4 #C5D9FA

Accessibility & contrast

On white

3.14

#5591EF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.68

#5591EF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5591EF

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5591EF	#FFFFFF	#000000	##000000
##5591EF	1.00	3.14	6.68	6.68
#FFFFFF	3.14	1.00	21.00	21.00
#000000	6.68	21.00	1.00	1.00
##000000	6.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6799F3

Deuteranopia (green-blind)

#508BED

Tritanopia (blue-blind)

#00A6B4

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #5591ef;
/* rgb */ color: rgb(85, 145, 239);
/* oklch */ color: oklch(66.0% 0.154 259.1);

Tailwind

colors: {
  custom: {
    50: '#93b0f5',
    500: '#5591ef',
    950: '#000000',
  },
}

SCSS

$custom: #5591ef;
$custom-light: #93b0f5;
$custom-dark: #000000;

JSON

{
  "hex": "#5591ef",
  "rgb": {
    "r": 85,
    "g": 145,
    "b": 239
  },
  "hsl": {
    "h": 216.623,
    "s": 82.796,
    "l": 63.529
  },
  "oklch": {
    "l": 0.66017,
    "c": 0.15393,
    "h": 259.1
  },
  "luminance": 0.28414
}

Semantic roles & 50–950 ramp

primary

#5591EF

secondary

#EBD6B5

accent

#8B06DF

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #5591EF

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

Preview Lab → · Contrast checker → · Palette generator →