#5599EB#5599EB

#5599EB is a light, vivid cyan. Relative luminance 0.307; OKLCH L 67.5% C 0.141 H 254.3°. Best body text is #000000 at 7.14:1 contrast (WCAG AA passes).

Color values

HEX	#5599EB
RGB	rgb(85, 153, 235)
HSL	hsl(213, 79%, 63%)
HSV	hsv(213, 64%, 92%)
CMYK	cmyk(63.8%, 34.9%, 0%, 7.8%)
CIE-LAB	lab(62.26, 3.58, -47.71)
CIE-LCH	lch(62.26, 47.84, 274.29°)
OKLab	oklab(67.51% -0.038 -0.1353)
OKLCH	oklch(67.51% 0.141 254.3)
XYZ	xyz(30.1275, 30.7090, 82.9209)
Luminance	0.3071 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5599EB #EBA755

analogous

#55E4EB #5599EB #5C55EB

triadic

#5599EB #EB5599 #99EB55

tetradic

#5599EB #EB55E4 #EBA755 #55EB5C

square

#5599EB #EB55E4 #EBA755 #55EB5C

split-complementary

#5599EB #EB5C55 #E4EB55

monochromatic

#155CB1 #1E78E5 #5599EB #8CBAF1 #C3DBF8

Accessibility & contrast

On white

2.94

#5599EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.14

#5599EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5599EB

7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5599EB	#FFFFFF	#000000	##000000
##5599EB	1.00	2.94	7.14	7.14
#FFFFFF	2.94	1.00	21.00	21.00
#000000	7.14	21.00	1.00	1.00
##000000	7.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#759EEE

Deuteranopia (green-blind)

#6090E9

Tritanopia (blue-blind)

#00ACB7

Achromatopsia (no color)

#969696

Design tokens & code

CSS

--color: #5599eb;
/* rgb */ color: rgb(85, 153, 235);
/* oklch */ color: oklch(67.5% 0.141 254.3);

Tailwind

colors: {
  custom: {
    50: '#92b6f2',
    500: '#5599eb',
    950: '#000000',
  },
}

SCSS

$custom: #5599eb;
$custom-light: #92b6f2;
$custom-dark: #000000;

JSON

{
  "hex": "#5599eb",
  "rgb": {
    "r": 85,
    "g": 153,
    "b": 235
  },
  "hsl": {
    "h": 212.8,
    "s": 78.947,
    "l": 62.745
  },
  "oklch": {
    "l": 0.6751,
    "c": 0.14053,
    "h": 254.3
  },
  "luminance": 0.30712
}

Semantic roles & 50–950 ramp

primary

#5599EB

secondary

#E9D0B3

accent

#7D0ADB

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1117

muted

#7E8085

Preview Lab

Preview with #5599EB

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

Preview Lab → · Contrast checker → · Palette generator →