#63B7F0#63B7F0

#63B7F0 is a light, moderate cyan. Relative luminance 0.428; OKLCH L 74.9% C 0.116 H 240.4°. Best body text is #000000 at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#63B7F0
RGB	rgb(99, 183, 240)
HSL	hsl(204, 82%, 66%)
HSV	hsv(204, 59%, 94%)
CMYK	cmyk(58.8%, 23.8%, 0%, 5.9%)
CIE-LAB	lab(71.42, -9.13, -36.05)
CIE-LCH	lch(71.42, 37.19, 255.79°)
OKLab	oklab(74.94% -0.0574 -0.1011)
OKLCH	oklch(74.94% 0.116 240.4)
XYZ	xyz(37.8014, 42.8074, 88.6917)
Luminance	0.4281 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B7F0 #F09C63

analogous

#63F0E2 #63B7F0 #6371F0

triadic

#63B7F0 #F063B7 #B7F063

tetradic

#63B7F0 #E263F0 #F09C63 #71F063

square

#63B7F0 #E263F0 #F09C63 #71F063

split-complementary

#63B7F0 #F06371 #F0E263

monochromatic

#137DC6 #2B9DEB #63B7F0 #9BD1F5 #D3EBFB

Accessibility & contrast

On white

2.20

#63B7F0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.56

#63B7F0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B7F0

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B7F0	#FFFFFF	#000000	##000000
##63B7F0	1.00	2.20	9.56	9.56
#FFFFFF	2.20	1.00	21.00	21.00
#000000	9.56	21.00	1.00	1.00
##000000	9.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DB7F3

Deuteranopia (green-blind)

#8AA9EF

Tritanopia (blue-blind)

#00C5CA

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #63b7f0;
/* rgb */ color: rgb(99, 183, 240);
/* oklch */ color: oklch(74.9% 0.116 240.4);

Tailwind

colors: {
  custom: {
    50: '#9accf5',
    500: '#63b7f0',
    950: '#000000',
  },
}

SCSS

$custom: #63b7f0;
$custom-light: #9accf5;
$custom-dark: #000000;

JSON

{
  "hex": "#63b7f0",
  "rgb": {
    "r": 99,
    "g": 183,
    "b": 240
  },
  "hsl": {
    "h": 204.255,
    "s": 82.456,
    "l": 66.471
  },
  "oklch": {
    "l": 0.74943,
    "c": 0.11621,
    "h": 240.4
  },
  "luminance": 0.42811
}

Semantic roles & 50–950 ramp

primary

#63B7F0

secondary

#EED3C1

accent

#5E07DF

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B7F0

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

Preview Lab → · Contrast checker → · Palette generator →