#55B1DA#55B1DA

#55B1DA is a light, moderate cyan. Relative luminance 0.384; OKLCH L 72.1% C 0.105 H 229.8°. Best body text is #000000 at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#55B1DA
RGB	rgb(85, 177, 218)
HSL	hsl(198, 64%, 59%)
HSV	hsv(198, 61%, 85%)
CMYK	cmyk(61%, 18.8%, 0%, 14.5%)
CIE-LAB	lab(68.34, -15.27, -28.86)
CIE-LCH	lch(68.34, 32.65, 242.12°)
OKLab	oklab(72.07% -0.068 -0.0806)
OKLCH	oklch(72.07% 0.105 229.8)
XYZ	xyz(32.1184, 38.4343, 72.0420)
Luminance	0.3844 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#55B1DA #DA7E55

analogous

#55DAC0 #55B1DA #556FDA

triadic

#55B1DA #DA55B1 #B1DA55

tetradic

#55B1DA #C055DA #DA7E55 #6FDA55

square

#55B1DA #C055DA #DA7E55 #6FDA55

split-complementary

#55B1DA #DA556F #DAC055

monochromatic

#207194 #2B97C7 #55B1DA #87C8E5 #BADFF0

Accessibility & contrast

On white

2.42

#55B1DA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.69

#55B1DA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #55B1DA

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##55B1DA	#FFFFFF	#000000	##000000
##55B1DA	1.00	2.42	8.69	8.69
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.69	21.00	1.00	1.00
##000000	8.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9CAEDC

Deuteranopia (green-blind)

#89A1D9

Tritanopia (blue-blind)

#00BCBE

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #55b1da;
/* rgb */ color: rgb(85, 177, 218);
/* oklch */ color: oklch(72.1% 0.105 229.8);

Tailwind

colors: {
  custom: {
    50: '#91c8e5',
    500: '#55b1da',
    950: '#000000',
  },
}

SCSS

$custom: #55b1da;
$custom-light: #91c8e5;
$custom-dark: #000000;

JSON

{
  "hex": "#55b1da",
  "rgb": {
    "r": 85,
    "g": 177,
    "b": 218
  },
  "hsl": {
    "h": 198.496,
    "s": 64.251,
    "l": 59.412
  },
  "oklch": {
    "l": 0.72066,
    "c": 0.10549,
    "h": 229.8
  },
  "luminance": 0.38438
}

Semantic roles & 50–950 ramp

primary

#55B1DA

secondary

#DFBBAB

accent

#7441E7

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1315

muted

#7E8284

Preview Lab

Preview with #55B1DA

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

Preview Lab → · Contrast checker → · Palette generator →