#5599EE#5599EE

#5599EE is a light, vivid cyan. Relative luminance 0.309; OKLCH L 67.7% C 0.144 H 255.0°. Best body text is #000000 at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#5599EE
RGB	rgb(85, 153, 238)
HSL	hsl(213, 82%, 63%)
HSV	hsv(213, 64%, 93%)
CMYK	cmyk(64.3%, 35.7%, 0%, 6.7%)
CIE-LAB	lab(62.41, 4.58, -49.13)
CIE-LCH	lch(62.41, 49.34, 275.33°)
OKLab	oklab(67.67% -0.0373 -0.1394)
OKLCH	oklch(67.67% 0.144 255)
XYZ	xyz(30.5646, 30.8838, 85.2228)
Luminance	0.3089 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5599EE #EEAA55

analogous

#55E6EE #5599EE #5D55EE

triadic

#5599EE #EE5599 #99EE55

tetradic

#5599EE #EE55E6 #EEAA55 #55EE5D

square

#5599EE #EE55E6 #EEAA55 #55EE5D

split-complementary

#5599EE #EE5D55 #E6EE55

monochromatic

#125BB6 #1D78E8 #5599EE #8DBAF4 #C4DCF9

Accessibility & contrast

On white

2.93

#5599EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.18

#5599EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5599EE

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5599EE	#FFFFFF	#000000	##000000
##5599EE	1.00	2.93	7.18	7.18
#FFFFFF	2.93	1.00	21.00	21.00
#000000	7.18	21.00	1.00	1.00
##000000	7.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#749FF2

Deuteranopia (green-blind)

#5E90EC

Tritanopia (blue-blind)

#00ADB8

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #5599ee;
/* rgb */ color: rgb(85, 153, 238);
/* oklch */ color: oklch(67.7% 0.144 255.0);

Tailwind

colors: {
  custom: {
    50: '#93b6f4',
    500: '#5599ee',
    950: '#000000',
  },
}

SCSS

$custom: #5599ee;
$custom-light: #93b6f4;
$custom-dark: #000000;

JSON

{
  "hex": "#5599ee",
  "rgb": {
    "r": 85,
    "g": 153,
    "b": 238
  },
  "hsl": {
    "h": 213.333,
    "s": 81.818,
    "l": 63.333
  },
  "oklch": {
    "l": 0.67674,
    "c": 0.14433,
    "h": 255
  },
  "luminance": 0.30887
}

Semantic roles & 50–950 ramp

primary

#5599EE

secondary

#EBD2B4

accent

#7F07DE

background

#F9FBFE

surface

#F2F6FD

border

#CCD0D5

text

#0E1117

muted

#7E8085

Preview Lab

Preview with #5599EE

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

Preview Lab → · Contrast checker → · Palette generator →