#5599E4#5599E4

#5599E4 is a light, vivid cyan. Relative luminance 0.303; OKLCH L 67.1% C 0.132 H 252.4°. Best body text is #000000 at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#5599E4
RGB	rgb(85, 153, 228)
HSL	hsl(211, 73%, 61%)
HSV	hsv(211, 63%, 89%)
CMYK	cmyk(62.7%, 32.9%, 0%, 10.6%)
CIE-LAB	lab(61.92, 1.26, -44.37)
CIE-LCH	lch(61.92, 44.39, 271.62°)
OKLab	oklab(67.13% -0.0398 -0.1256)
OKLCH	oklch(67.13% 0.132 252.4)
XYZ	xyz(29.1360, 30.3124, 77.6992)
Luminance	0.3031 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5599E4 #E4A055

analogous

#55E0E4 #5599E4 #5955E4

triadic

#5599E4 #E45599 #99E455

tetradic

#5599E4 #E455E0 #E4A055 #55E459

square

#5599E4 #E455E0 #E4A055 #55E459

split-complementary

#5599E4 #E45955 #E0E455

monochromatic

#1A5CA4 #2379D9 #5599E4 #8AB9EC #BFD8F5

Accessibility & contrast

On white

2.97

#5599E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.06

#5599E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5599E4

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5599E4	#FFFFFF	#000000	##000000
##5599E4	1.00	2.97	7.06	7.06
#FFFFFF	2.97	1.00	21.00	21.00
#000000	7.06	21.00	1.00	1.00
##000000	7.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#799DE7

Deuteranopia (green-blind)

#658FE2

Tritanopia (blue-blind)

#00AAB4

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #5599e4;
/* rgb */ color: rgb(85, 153, 228);
/* oklch */ color: oklch(67.1% 0.132 252.4);

Tailwind

colors: {
  custom: {
    50: '#91b6ed',
    500: '#5599e4',
    950: '#000000',
  },
}

SCSS

$custom: #5599e4;
$custom-light: #91b6ed;
$custom-dark: #000000;

JSON

{
  "hex": "#5599e4",
  "rgb": {
    "r": 85,
    "g": 153,
    "b": 228
  },
  "hsl": {
    "h": 211.469,
    "s": 72.589,
    "l": 61.373
  },
  "oklch": {
    "l": 0.67134,
    "c": 0.13173,
    "h": 252.4
  },
  "luminance": 0.30315
}

Semantic roles & 50–950 ramp

primary

#5599E4

secondary

#E5CCB0

accent

#7811D5

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1116

muted

#7E8084

Preview Lab

Preview with #5599E4

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

Preview Lab → · Contrast checker → · Palette generator →