#63B5F5#63B5F5

#63B5F5 is a light, vivid cyan. Relative luminance 0.423; OKLCH L 74.7% C 0.123 H 244.1°. Best body text is #000000 at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#63B5F5
RGB	rgb(99, 181, 245)
HSL	hsl(206, 88%, 67%)
HSV	hsv(206, 60%, 96%)
CMYK	cmyk(59.6%, 26.1%, 0%, 3.9%)
CIE-LAB	lab(71.07, -6.49, -39.31)
CIE-LCH	lch(71.07, 39.85, 260.62°)
OKLab	oklab(74.73% -0.0537 -0.1105)
OKLCH	oklch(74.73% 0.123 244.1)
XYZ	xyz(38.1448, 42.2894, 92.5210)
Luminance	0.4229 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B5F5 #F5A363

analogous

#63F5EC #63B5F5 #636CF5

triadic

#63B5F5 #F563B5 #B5F563

tetradic

#63B5F5 #EC63F5 #F5A363 #6CF563

square

#63B5F5 #EC63F5 #F5A363 #6CF563

split-complementary

#63B5F5 #F5636C #F5EC63

monochromatic

#0D7BD0 #299AF1 #63B5F5 #9DD0F9 #D6ECFC

Accessibility & contrast

On white

2.22

#63B5F5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.46

#63B5F5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B5F5

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B5F5	#FFFFFF	#000000	##000000
##63B5F5	1.00	2.22	9.46	9.46
#FFFFFF	2.22	1.00	21.00	21.00
#000000	9.46	21.00	1.00	1.00
##000000	9.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99B6F8

Deuteranopia (green-blind)

#85A7F4

Tritanopia (blue-blind)

#00C4CB

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #63b5f5;
/* rgb */ color: rgb(99, 181, 245);
/* oklch */ color: oklch(74.7% 0.123 244.1);

Tailwind

colors: {
  custom: {
    50: '#9bcbf8',
    500: '#63b5f5',
    950: '#000000',
  },
}

SCSS

$custom: #63b5f5;
$custom-light: #9bcbf8;
$custom-dark: #000000;

JSON

{
  "hex": "#63b5f5",
  "rgb": {
    "r": 99,
    "g": 181,
    "b": 245
  },
  "hsl": {
    "h": 206.301,
    "s": 87.952,
    "l": 67.451
  },
  "oklch": {
    "l": 0.74731,
    "c": 0.12283,
    "h": 244.1
  },
  "luminance": 0.42293
}

Semantic roles & 50–950 ramp

primary

#63B5F5

secondary

#F1D7C3

accent

#6501E5

background

#FAFCFF

surface

#F4F8FF

border

#CED1D7

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B5F5

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

Preview Lab → · Contrast checker → · Palette generator →