#63B3F0#63B3F0

#63B3F0 is a light, moderate cyan. Relative luminance 0.412; OKLCH L 74.1% C 0.119 H 243.4°. Best body text is #000000 at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#63B3F0
RGB	rgb(99, 179, 240)
HSL	hsl(206, 82%, 66%)
HSV	hsv(206, 59%, 94%)
CMYK	cmyk(58.8%, 25.4%, 0%, 5.9%)
CIE-LAB	lab(70.30, -6.95, -37.80)
CIE-LCH	lch(70.30, 38.43, 259.58°)
OKLab	oklab(74.06% -0.0531 -0.1061)
OKLCH	oklch(74.06% 0.119 243.4)
XYZ	xyz(36.9880, 41.1807, 88.4206)
Luminance	0.4118 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B3F0 #F0A063

analogous

#63F0E6 #63B3F0 #636DF0

triadic

#63B3F0 #F063B3 #B3F063

tetradic

#63B3F0 #E663F0 #F0A063 #6DF063

square

#63B3F0 #E663F0 #F0A063 #6DF063

split-complementary

#63B3F0 #F0636D #F0E663

monochromatic

#1378C6 #2B98EB #63B3F0 #9BCEF5 #D3E9FB

Accessibility & contrast

On white

2.27

#63B3F0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.24

#63B3F0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B3F0

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B3F0	#FFFFFF	#000000	##000000
##63B3F0	1.00	2.27	9.24	9.24
#FFFFFF	2.27	1.00	21.00	21.00
#000000	9.24	21.00	1.00	1.00
##000000	9.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B4F3

Deuteranopia (green-blind)

#85A6EF

Tritanopia (blue-blind)

#00C2C8

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #63b3f0;
/* rgb */ color: rgb(99, 179, 240);
/* oklch */ color: oklch(74.1% 0.119 243.4);

Tailwind

colors: {
  custom: {
    50: '#9ac9f5',
    500: '#63b3f0',
    950: '#000000',
  },
}

SCSS

$custom: #63b3f0;
$custom-light: #9ac9f5;
$custom-dark: #000000;

JSON

{
  "hex": "#63b3f0",
  "rgb": {
    "r": 99,
    "g": 179,
    "b": 240
  },
  "hsl": {
    "h": 205.957,
    "s": 82.456,
    "l": 66.471
  },
  "oklch": {
    "l": 0.74056,
    "c": 0.11867,
    "h": 243.4
  },
  "luminance": 0.41184
}

Semantic roles & 50–950 ramp

primary

#63B3F0

secondary

#EED4C1

accent

#6407DF

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B3F0

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

Preview Lab → · Contrast checker → · Palette generator →