#63CBF3#63CBF3

#63CBF3 is a light, moderate cyan. Relative luminance 0.518; OKLCH L 79.6% C 0.111 H 226.0°. Best body text is #000000 at 11.37:1 contrast (WCAG AA passes).

Color values

HEX	#63CBF3
RGB	rgb(99, 203, 243)
HSL	hsl(197, 86%, 67%)
HSV	hsv(197, 59%, 95%)
CMYK	cmyk(59.3%, 16.5%, 0%, 4.7%)
CIE-LAB	lab(77.18, -18.78, -28.79)
CIE-LCH	lch(77.18, 34.37, 236.88°)
OKLab	oklab(79.56% -0.0774 -0.0802)
OKLCH	oklch(79.56% 0.111 226)
XYZ	xyz(42.6729, 51.8314, 92.5322)
Luminance	0.5184 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63CBF3 #F38B63

analogous

#63F3D3 #63CBF3 #6383F3

triadic

#63CBF3 #F363CB #CBF363

tetradic

#63CBF3 #D363F3 #F38B63 #83F363

square

#63CBF3 #D363F3 #F38B63 #83F363

split-complementary

#63CBF3 #F36383 #F3D363

monochromatic

#1098CC #2AB8EF #63CBF3 #9CDEF7 #D5F1FC

Accessibility & contrast

On white

1.85

#63CBF3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.37

#63CBF3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63CBF3

11.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63CBF3	#FFFFFF	#000000	##000000
##63CBF3	1.00	1.85	11.37	11.37
#FFFFFF	1.85	1.00	21.00	21.00
#000000	11.37	21.00	1.00	1.00
##000000	11.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5C7F5

Deuteranopia (green-blind)

#A1B8F3

Tritanopia (blue-blind)

#00D7D8

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #63cbf3;
/* rgb */ color: rgb(99, 203, 243);
/* oklch */ color: oklch(79.6% 0.111 226.0);

Tailwind

colors: {
  custom: {
    50: '#9bdbf7',
    500: '#63cbf3',
    950: '#000000',
  },
}

SCSS

$custom: #63cbf3;
$custom-light: #9bdbf7;
$custom-dark: #000000;

JSON

{
  "hex": "#63cbf3",
  "rgb": {
    "r": 99,
    "g": 203,
    "b": 243
  },
  "hsl": {
    "h": 196.667,
    "s": 85.714,
    "l": 67.059
  },
  "oklch": {
    "l": 0.79558,
    "c": 0.11144,
    "h": 226
  },
  "luminance": 0.51836
}

Semantic roles & 50–950 ramp

primary

#63CBF3

secondary

#C85C32

accent

#4103E2

background

#FCFEFF

surface

#F6FBFE

border

#D0D4D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #63CBF3

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

Preview Lab → · Contrast checker → · Palette generator →