#63BBE4#63BBE4

#63BBE4 is a light, moderate cyan. Relative luminance 0.438; OKLCH L 75.3% C 0.103 H 230.4°. Best body text is #000000 at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#63BBE4
RGB	rgb(99, 187, 228)
HSL	hsl(199, 70%, 64%)
HSV	hsv(199, 57%, 89%)
CMYK	cmyk(56.6%, 18%, 0%, 10.6%)
CIE-LAB	lab(72.09, -14.89, -28.51)
CIE-LCH	lch(72.09, 32.17, 242.42°)
OKLab	oklab(75.32% -0.0657 -0.0795)
OKLCH	oklch(75.32% 0.103 230.4)
XYZ	xyz(36.9142, 43.7913, 79.8910)
Luminance	0.4380 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BBE4 #E48C63

analogous

#63E4CD #63BBE4 #637BE4

triadic

#63BBE4 #E463BB #BBE463

tetradic

#63BBE4 #CD63E4 #E48C63 #7BE463

square

#63BBE4 #CD63E4 #E48C63 #7BE463

split-complementary

#63BBE4 #E4637B #E4CD63

monochromatic

#1E81AE #2FA4DB #63BBE4 #97D2ED #CBE8F6

Accessibility & contrast

On white

2.15

#63BBE4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.76

#63BBE4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BBE4

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BBE4	#FFFFFF	#000000	##000000
##63BBE4	1.00	2.15	9.76	9.76
#FFFFFF	2.15	1.00	21.00	21.00
#000000	9.76	21.00	1.00	1.00
##000000	9.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6B8E6

Deuteranopia (green-blind)

#94ABE3

Tritanopia (blue-blind)

#00C6C8

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #63bbe4;
/* rgb */ color: rgb(99, 187, 228);
/* oklch */ color: oklch(75.3% 0.103 230.4);

Tailwind

colors: {
  custom: {
    50: '#99cfec',
    500: '#63bbe4',
    950: '#000000',
  },
}

SCSS

$custom: #63bbe4;
$custom-light: #99cfec;
$custom-dark: #000000;

JSON

{
  "hex": "#63bbe4",
  "rgb": {
    "r": 99,
    "g": 187,
    "b": 228
  },
  "hsl": {
    "h": 199.07,
    "s": 70.492,
    "l": 64.118
  },
  "oklch": {
    "l": 0.75317,
    "c": 0.10312,
    "h": 230.4
  },
  "luminance": 0.43795
}

Semantic roles & 50–950 ramp

primary

#63BBE4

secondary

#E8C9BB

accent

#5013D3

background

#F9FCFE

surface

#F2F9FD

border

#CCD2D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63BBE4

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

Preview Lab → · Contrast checker → · Palette generator →