#5591FD#5591FD

#5591FD is a light, vivid blue. Relative luminance 0.293; OKLCH L 66.9% C 0.172 H 261.2°. Best body text is #000000 at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#5591FD
RGB	rgb(85, 145, 253)
HSL	hsl(219, 98%, 66%)
HSV	hsv(219, 66%, 99%)
CMYK	cmyk(66.4%, 42.7%, 0%, 0.8%)
CIE-LAB	lab(61.02, 14.38, -59.58)
CIE-LCH	lch(61.02, 61.29, 283.57°)
OKLab	oklab(66.85% -0.0265 -0.1702)
OKLCH	oklch(66.85% 0.172 261.2)
XYZ	xyz(31.5950, 29.2708, 96.8942)
Luminance	0.2927 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5591FD #FDC155

analogous

#55E5FD #5591FD #6D55FD

triadic

#5591FD #FD5591 #91FD55

tetradic

#5591FD #FD55E5 #FDC155 #55FD6D

square

#5591FD #FD55E5 #FDC155 #55FD6D

split-complementary

#5591FD #FD6D55 #E5FD55

monochromatic

#034ED5 #196AFC #5591FD #91B8FE #CEDFFE

Accessibility & contrast

On white

3.06

#5591FD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.85

#5591FD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5591FD

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5591FD	#FFFFFF	#000000	##000000
##5591FD	1.00	3.06	6.85	6.85
#FFFFFF	3.06	1.00	21.00	21.00
#000000	6.85	21.00	1.00	1.00
##000000	6.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D9CFF

Deuteranopia (green-blind)

#418CFB

Tritanopia (blue-blind)

#00AABB

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #5591fd;
/* rgb */ color: rgb(85, 145, 253);
/* oklch */ color: oklch(66.9% 0.172 261.2);

Tailwind

colors: {
  custom: {
    50: '#95b0ff',
    500: '#5591fd',
    950: '#000000',
  },
}

SCSS

$custom: #5591fd;
$custom-light: #95b0ff;
$custom-dark: #000000;

JSON

{
  "hex": "#5591fd",
  "rgb": {
    "r": 85,
    "g": 145,
    "b": 253
  },
  "hsl": {
    "h": 218.571,
    "s": 97.674,
    "l": 66.275
  },
  "oklch": {
    "l": 0.66853,
    "c": 0.17223,
    "h": 261.2
  },
  "luminance": 0.29274
}

Semantic roles & 50–950 ramp

primary

#5591FD

secondary

#F2DFBB

accent

#9400E6

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0F1018

muted

#7E7F86

Preview Lab

Preview with #5591FD

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

Preview Lab → · Contrast checker → · Palette generator →