#63C8F3#63C8F3

#63C8F3 is a light, moderate cyan. Relative luminance 0.504; OKLCH L 78.9% C 0.112 H 228.5°. Best body text is #000000 at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#63C8F3
RGB	rgb(99, 200, 243)
HSL	hsl(198, 86%, 67%)
HSV	hsv(198, 59%, 95%)
CMYK	cmyk(59.3%, 17.7%, 0%, 4.7%)
CIE-LAB	lab(76.33, -17.23, -30.09)
CIE-LCH	lch(76.33, 34.67, 240.20°)
OKLab	oklab(78.88% -0.0742 -0.0839)
OKLCH	oklch(78.88% 0.112 228.5)
XYZ	xyz(41.9712, 50.4282, 92.2984)
Luminance	0.5043 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C8F3 #F38E63

analogous

#63F3D6 #63C8F3 #6380F3

triadic

#63C8F3 #F363C8 #C8F363

tetradic

#63C8F3 #D663F3 #F38E63 #80F363

square

#63C8F3 #D663F3 #F38E63 #80F363

split-complementary

#63C8F3 #F36380 #F3D663

monochromatic

#1094CC #2AB4EF #63C8F3 #9CDCF7 #D5F0FC

Accessibility & contrast

On white

1.89

#63C8F3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.09

#63C8F3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C8F3

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C8F3	#FFFFFF	#000000	##000000
##63C8F3	1.00	1.89	11.09	11.09
#FFFFFF	1.89	1.00	21.00	21.00
#000000	11.09	21.00	1.00	1.00
##000000	11.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2C5F5

Deuteranopia (green-blind)

#9DB6F2

Tritanopia (blue-blind)

#00D4D6

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #63c8f3;
/* rgb */ color: rgb(99, 200, 243);
/* oklch */ color: oklch(78.9% 0.112 228.5);

Tailwind

colors: {
  custom: {
    50: '#9bd8f7',
    500: '#63c8f3',
    950: '#000000',
  },
}

SCSS

$custom: #63c8f3;
$custom-light: #9bd8f7;
$custom-dark: #000000;

JSON

{
  "hex": "#63c8f3",
  "rgb": {
    "r": 99,
    "g": 200,
    "b": 243
  },
  "hsl": {
    "h": 197.917,
    "s": 85.714,
    "l": 67.059
  },
  "oklch": {
    "l": 0.78881,
    "c": 0.11205,
    "h": 228.5
  },
  "luminance": 0.50432
}

Semantic roles & 50–950 ramp

primary

#63C8F3

secondary

#C85F32

accent

#4603E2

background

#FCFEFF

surface

#F6FBFE

border

#D0D4D6

text

#0F1417

muted

#808385

Preview Lab

Preview with #63C8F3

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

Preview Lab → · Contrast checker → · Palette generator →