#63B9CC#63B9CC

#63B9CC is a light, moderate cyan. Relative luminance 0.417; OKLCH L 73.9% C 0.087 H 213.8°. Best body text is #000000 at 9.34:1 contrast (WCAG AA passes).

Color values

HEX	#63B9CC
RGB	rgb(99, 185, 204)
HSL	hsl(191, 51%, 59%)
HSV	hsv(191, 51%, 80%)
CMYK	cmyk(51.5%, 9.3%, 0%, 20%)
CIE-LAB	lab(70.67, -20.77, -17.59)
CIE-LCH	lch(70.67, 27.22, 220.25°)
OKLab	oklab(73.9% -0.0725 -0.0486)
OKLCH	oklch(73.9% 0.087 213.8)
XYZ	xyz(33.3894, 41.7073, 63.4058)
Luminance	0.4171 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B9CC #CC7663

analogous

#63CCAB #63B9CC #6385CC

triadic

#63B9CC #CC63B9 #B9CC63

tetradic

#63B9CC #AB63CC #CC7663 #85CC63

square

#63B9CC #AB63CC #CC7663 #85CC63

split-complementary

#63B9CC #CC6385 #CCAB63

monochromatic

#2C7888 #3CA0B6 #63B9CC #91CEDB #BFE2EA

Accessibility & contrast

On white

2.25

#63B9CC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.34

#63B9CC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B9CC

9.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B9CC	#FFFFFF	#000000	##000000
##63B9CC	1.00	2.25	9.34	9.34
#FFFFFF	2.25	1.00	21.00	21.00
#000000	9.34	21.00	1.00	1.00
##000000	9.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ABB4CD

Deuteranopia (green-blind)

#9BA8CC

Tritanopia (blue-blind)

#1CC1BF

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #63b9cc;
/* rgb */ color: rgb(99, 185, 204);
/* oklch */ color: oklch(73.9% 0.087 213.8);

Tailwind

colors: {
  custom: {
    50: '#97cedb',
    500: '#63b9cc',
    950: '#000000',
  },
}

SCSS

$custom: #63b9cc;
$custom-light: #97cedb;
$custom-dark: #000000;

JSON

{
  "hex": "#63b9cc",
  "rgb": {
    "r": 99,
    "g": 185,
    "b": 204
  },
  "hsl": {
    "h": 190.857,
    "s": 50.725,
    "l": 59.412
  },
  "oklch": {
    "l": 0.73903,
    "c": 0.08732,
    "h": 213.8
  },
  "luminance": 0.4171
}

Semantic roles & 50–950 ramp

primary

#63B9CC

secondary

#DAB8B1

accent

#674EDA

background

#F9FCFD

surface

#F2F9FB

border

#CCD2D4

text

#0E1315

muted

#7E8283

Preview Lab

Preview with #63B9CC

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

Preview Lab → · Contrast checker → · Palette generator →