#55B3EE#55B3EE

#55B3EE is a light, vivid cyan. Relative luminance 0.403; OKLCH L 73.4% C 0.123 H 239.1°. Best body text is #000000 at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#55B3EE
RGB	rgb(85, 179, 238)
HSL	hsl(203, 82%, 63%)
HSV	hsv(203, 64%, 93%)
CMYK	cmyk(64.3%, 24.8%, 0%, 6.7%)
CIE-LAB	lab(69.71, -10.07, -37.67)
CIE-LCH	lch(69.71, 38.99, 255.04°)
OKLab	oklab(73.42% -0.0633 -0.1059)
OKLCH	oklch(73.42% 0.123 239.1)
XYZ	xyz(35.2931, 40.3409, 86.7989)
Luminance	0.4034 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#55B3EE #EE9055

analogous

#55EEDC #55B3EE #5566EE

triadic

#55B3EE #EE55B3 #B3EE55

tetradic

#55B3EE #DC55EE #EE9055 #66EE55

square

#55B3EE #DC55EE #EE9055 #66EE55

split-complementary

#55B3EE #EE5566 #EEDC55

monochromatic

#1277B6 #1D9AE8 #55B3EE #8DCCF4 #C4E5F9

Accessibility & contrast

On white

2.32

#55B3EE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.07

#55B3EE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #55B3EE

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##55B3EE	#FFFFFF	#000000	##000000
##55B3EE	1.00	2.32	9.07	9.07
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.07	21.00	1.00	1.00
##000000	9.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B3F1

Deuteranopia (green-blind)

#83A4ED

Tritanopia (blue-blind)

#00C2C7

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #55b3ee;
/* rgb */ color: rgb(85, 179, 238);
/* oklch */ color: oklch(73.4% 0.123 239.1);

Tailwind

colors: {
  custom: {
    50: '#93c9f3',
    500: '#55b3ee',
    950: '#000000',
  },
}

SCSS

$custom: #55b3ee;
$custom-light: #93c9f3;
$custom-dark: #000000;

JSON

{
  "hex": "#55b3ee",
  "rgb": {
    "r": 85,
    "g": 179,
    "b": 238
  },
  "hsl": {
    "h": 203.137,
    "s": 81.818,
    "l": 63.333
  },
  "oklch": {
    "l": 0.73421,
    "c": 0.12336,
    "h": 239.1
  },
  "luminance": 0.40345
}

Semantic roles & 50–950 ramp

primary

#55B3EE

secondary

#EBC9B4

accent

#5A07DE

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1317

muted

#7E8285

Preview Lab

Preview with #55B3EE

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

Preview Lab → · Contrast checker → · Palette generator →