#55B4DD#55B4DD

#55B4DD is a light, moderate cyan. Relative luminance 0.398; OKLCH L 72.9% C 0.107 H 229.1°. Best body text is #000000 at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#55B4DD
RGB	rgb(85, 180, 221)
HSL	hsl(198, 67%, 60%)
HSV	hsv(198, 62%, 87%)
CMYK	cmyk(61.5%, 18.6%, 0%, 13.3%)
CIE-LAB	lab(69.32, -15.94, -29.00)
CIE-LCH	lch(69.32, 33.09, 241.21°)
OKLab	oklab(72.89% -0.0701 -0.081)
OKLCH	oklch(72.89% 0.107 229.1)
XYZ	xyz(33.1136, 39.7909, 74.3279)
Luminance	0.3979 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#55B4DD #DD7E55

analogous

#55DDC2 #55B4DD #5570DD

triadic

#55B4DD #DD55B4 #B4DD55

tetradic

#55B4DD #C255DD #DD7E55 #70DD55

square

#55B4DD #C255DD #DD7E55 #70DD55

split-complementary

#55B4DD #DD5570 #DDC255

monochromatic

#1F7499 #299BCC #55B4DD #88CBE7 #BBE1F1

Accessibility & contrast

On white

2.34

#55B4DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.96

#55B4DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #55B4DD

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##55B4DD	#FFFFFF	#000000	##000000
##55B4DD	1.00	2.34	8.96	8.96
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.96	21.00	1.00	1.00
##000000	8.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9FB1DF

Deuteranopia (green-blind)

#8CA3DC

Tritanopia (blue-blind)

#00C0C1

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #55b4dd;
/* rgb */ color: rgb(85, 180, 221);
/* oklch */ color: oklch(72.9% 0.107 229.1);

Tailwind

colors: {
  custom: {
    50: '#91cae7',
    500: '#55b4dd',
    950: '#000000',
  },
}

SCSS

$custom: #55b4dd;
$custom-light: #91cae7;
$custom-dark: #000000;

JSON

{
  "hex": "#55b4dd",
  "rgb": {
    "r": 85,
    "g": 180,
    "b": 221
  },
  "hsl": {
    "h": 198.088,
    "s": 66.667,
    "l": 60
  },
  "oklch": {
    "l": 0.72886,
    "c": 0.10713,
    "h": 229.1
  },
  "luminance": 0.39794
}

Semantic roles & 50–950 ramp

primary

#55B4DD

secondary

#E1BDAD

accent

#723EEA

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #55B4DD

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

Preview Lab → · Contrast checker → · Palette generator →