#63C9EB#63C9EB

#63C9EB is a light, moderate cyan. Relative luminance 0.504; OKLCH L 78.8% C 0.106 H 222.5°. Best body text is #000000 at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#63C9EB
RGB	rgb(99, 201, 235)
HSL	hsl(195, 77%, 65%)
HSV	hsv(195, 58%, 92%)
CMYK	cmyk(57.9%, 14.5%, 0%, 7.8%)
CIE-LAB	lab(76.33, -20.10, -25.80)
CIE-LCH	lch(76.33, 32.71, 232.08°)
OKLab	oklab(78.78% -0.0782 -0.0717)
OKLCH	oklch(78.78% 0.106 222.5)
XYZ	xyz(41.0217, 50.4201, 86.1514)
Luminance	0.5042 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C9EB #EB8563

analogous

#63EBC9 #63C9EB #6385EB

triadic

#63C9EB #EB63C9 #C9EB63

tetradic

#63C9EB #C963EB #EB8563 #85EB63

square

#63C9EB #C963EB #EB8563 #85EB63

split-complementary

#63C9EB #EB6385 #EBC963

monochromatic

#1893BC #2DB6E4 #63C9EB #99DCF2 #CFEFF9

Accessibility & contrast

On white

1.89

#63C9EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.08

#63C9EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C9EB

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C9EB	#FFFFFF	#000000	##000000
##63C9EB	1.00	1.89	11.08	11.08
#FFFFFF	1.89	1.00	21.00	21.00
#000000	11.08	21.00	1.00	1.00
##000000	11.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5C5ED

Deuteranopia (green-blind)

#A2B6EB

Tritanopia (blue-blind)

#00D4D4

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #63c9eb;
/* rgb */ color: rgb(99, 201, 235);
/* oklch */ color: oklch(78.8% 0.106 222.5);

Tailwind

colors: {
  custom: {
    50: '#9ad9f1',
    500: '#63c9eb',
    950: '#000000',
  },
}

SCSS

$custom: #63c9eb;
$custom-light: #9ad9f1;
$custom-dark: #000000;

JSON

{
  "hex": "#63c9eb",
  "rgb": {
    "r": 99,
    "g": 201,
    "b": 235
  },
  "hsl": {
    "h": 195,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.78781,
    "c": 0.10611,
    "h": 222.5
  },
  "luminance": 0.50424
}

Semantic roles & 50–950 ramp

primary

#63C9EB

secondary

#BB5838

accent

#3F0CDA

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0F1416

muted

#808385

Preview Lab

Preview with #63C9EB

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

Preview Lab → · Contrast checker → · Palette generator →