#63BBF1#63BBF1

#63BBF1 is a light, moderate cyan. Relative luminance 0.445; OKLCH L 75.9% C 0.115 H 237.8°. Best body text is #000000 at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#63BBF1
RGB	rgb(99, 187, 241)
HSL	hsl(203, 84%, 67%)
HSV	hsv(203, 59%, 95%)
CMYK	cmyk(58.9%, 22.4%, 0%, 5.5%)
CIE-LAB	lab(72.59, -10.98, -34.79)
CIE-LCH	lch(72.59, 36.48, 252.49°)
OKLab	oklab(75.88% -0.0613 -0.0974)
OKLCH	oklch(75.88% 0.115 237.8)
XYZ	xyz(38.7871, 44.5405, 89.7552)
Luminance	0.4454 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63BBF1 #F19963

analogous

#63F1E0 #63BBF1 #6374F1

triadic

#63BBF1 #F163BB #BBF163

tetradic

#63BBF1 #E063F1 #F19963 #74F163

square

#63BBF1 #E063F1 #F19963 #74F163

split-complementary

#63BBF1 #F16374 #F1E063

monochromatic

#1283C8 #2BA3EC #63BBF1 #9BD3F6 #D3ECFB

Accessibility & contrast

On white

2.12

#63BBF1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.91

#63BBF1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63BBF1

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63BBF1	#FFFFFF	#000000	##000000
##63BBF1	1.00	2.12	9.91	9.91
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.91	21.00	1.00	1.00
##000000	9.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A2BAF4

Deuteranopia (green-blind)

#8FACF0

Tritanopia (blue-blind)

#00C9CD

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #63bbf1;
/* rgb */ color: rgb(99, 187, 241);
/* oklch */ color: oklch(75.9% 0.115 237.8);

Tailwind

colors: {
  custom: {
    50: '#9acff6',
    500: '#63bbf1',
    950: '#000000',
  },
}

SCSS

$custom: #63bbf1;
$custom-light: #9acff6;
$custom-dark: #000000;

JSON

{
  "hex": "#63bbf1",
  "rgb": {
    "r": 99,
    "g": 187,
    "b": 241
  },
  "hsl": {
    "h": 202.817,
    "s": 83.529,
    "l": 66.667
  },
  "oklch": {
    "l": 0.75879,
    "c": 0.11508,
    "h": 237.8
  },
  "luminance": 0.44544
}

Semantic roles & 50–950 ramp

primary

#63BBF1

secondary

#EFD2C1

accent

#5906E0

background

#FAFCFE

surface

#F4F9FD

border

#CED2D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63BBF1

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

Preview Lab → · Contrast checker → · Palette generator →