#63BBF0#63BBF0

#63BBF0 is a light, moderate cyan. Relative luminance 0.445; OKLCH L 75.8% C 0.114 H 237.3°. Best body text is #000000 at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#63BBF0
RGB	rgb(99, 187, 240)
HSL	hsl(203, 82%, 66%)
HSV	hsv(203, 59%, 94%)
CMYK	cmyk(58.8%, 22.1%, 0%, 5.9%)
CIE-LAB	lab(72.55, -11.28, -34.31)
CIE-LCH	lch(72.55, 36.12, 251.80°)
OKLab	oklab(75.83% -0.0616 -0.096)
OKLCH	oklch(75.83% 0.114 237.3)
XYZ	xyz(38.6382, 44.4809, 88.9707)
Luminance	0.4449 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BBF0 #F09863

analogous

#63F0DE #63BBF0 #6375F0

triadic

#63BBF0 #F063BB #BBF063

tetradic

#63BBF0 #DE63F0 #F09863 #75F063

square

#63BBF0 #DE63F0 #F09863 #75F063

split-complementary

#63BBF0 #F06375 #F0DE63

monochromatic

#1382C6 #2BA3EB #63BBF0 #9BD3F5 #D3ECFB

Accessibility & contrast

On white

2.12

#63BBF0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.90

#63BBF0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BBF0

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BBF0	#FFFFFF	#000000	##000000
##63BBF0	1.00	2.12	9.90	9.90
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.90	21.00	1.00	1.00
##000000	9.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2BAF3

Deuteranopia (green-blind)

#8FACEF

Tritanopia (blue-blind)

#00C9CD

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #63bbf0;
/* rgb */ color: rgb(99, 187, 240);
/* oklch */ color: oklch(75.8% 0.114 237.3);

Tailwind

colors: {
  custom: {
    50: '#9acff5',
    500: '#63bbf0',
    950: '#000000',
  },
}

SCSS

$custom: #63bbf0;
$custom-light: #9acff5;
$custom-dark: #000000;

JSON

{
  "hex": "#63bbf0",
  "rgb": {
    "r": 99,
    "g": 187,
    "b": 240
  },
  "hsl": {
    "h": 202.553,
    "s": 82.456,
    "l": 66.471
  },
  "oklch": {
    "l": 0.75835,
    "c": 0.11409,
    "h": 237.3
  },
  "luminance": 0.44485
}

Semantic roles & 50–950 ramp

primary

#63BBF0

secondary

#EED2C1

accent

#5807DF

background

#FAFCFE

surface

#F3F9FD

border

#CDD2D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63BBF0

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

Preview Lab → · Contrast checker → · Palette generator →