#63BBE9#63BBE9

#63BBE9 is a light, moderate cyan. Relative luminance 0.441; OKLCH L 75.5% C 0.107 H 233.5°. Best body text is #000000 at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#63BBE9
RGB	rgb(99, 187, 233)
HSL	hsl(201, 75%, 65%)
HSV	hsv(201, 58%, 91%)
CMYK	cmyk(57.5%, 19.7%, 0%, 8.6%)
CIE-LAB	lab(72.28, -13.40, -30.94)
CIE-LCH	lch(72.28, 33.71, 246.58°)
OKLab	oklab(75.53% -0.064 -0.0864)
OKLCH	oklch(75.53% 0.107 233.5)
XYZ	xyz(37.6183, 44.0730, 83.5995)
Luminance	0.4408 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BBE9 #E99163

analogous

#63E9D4 #63BBE9 #6378E9

triadic

#63BBE9 #E963BB #BBE963

tetradic

#63BBE9 #D463E9 #E99163 #78E963

square

#63BBE9 #D463E9 #E99163 #78E963

split-complementary

#63BBE9 #E96378 #E9D463

monochromatic

#1A82B8 #2DA4E1 #63BBE9 #99D2F1 #CEEAF8

Accessibility & contrast

On white

2.14

#63BBE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.82

#63BBE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BBE9

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BBE9	#FFFFFF	#000000	##000000
##63BBE9	1.00	2.14	9.82	9.82
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.82	21.00	1.00	1.00
##000000	9.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5B9EB

Deuteranopia (green-blind)

#92ABE8

Tritanopia (blue-blind)

#00C7CA

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #63bbe9;
/* rgb */ color: rgb(99, 187, 233);
/* oklch */ color: oklch(75.5% 0.107 233.5);

Tailwind

colors: {
  custom: {
    50: '#9acff0',
    500: '#63bbe9',
    950: '#000000',
  },
}

SCSS

$custom: #63bbe9;
$custom-light: #9acff0;
$custom-dark: #000000;

JSON

{
  "hex": "#63bbe9",
  "rgb": {
    "r": 99,
    "g": 187,
    "b": 233
  },
  "hsl": {
    "h": 200.597,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.75529,
    "c": 0.10749,
    "h": 233.5
  },
  "luminance": 0.44076
}

Semantic roles & 50–950 ramp

primary

#63BBE9

secondary

#EBCDBD

accent

#530ED7

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #63BBE9

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

Preview Lab → · Contrast checker → · Palette generator →