#63C4EF#63C4EF

#63C4EF is a light, moderate cyan. Relative luminance 0.484; OKLCH L 77.8% C 0.110 H 229.4°. Best body text is #000000 at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#63C4EF
RGB	rgb(99, 196, 239)
HSL	hsl(198, 81%, 66%)
HSV	hsv(198, 59%, 94%)
CMYK	cmyk(58.6%, 18%, 0%, 6.3%)
CIE-LAB	lab(75.05, -16.34, -29.91)
CIE-LCH	lch(75.05, 34.08, 241.35°)
OKLab	oklab(77.81% -0.0715 -0.0834)
OKLCH	oklch(77.81% 0.11 229.4)
XYZ	xyz(40.4595, 48.3606, 88.8470)
Luminance	0.4836 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63C4EF #EF8E63

analogous

#63EFD4 #63C4EF #637EEF

triadic

#63C4EF #EF63C4 #C4EF63

tetradic

#63C4EF #D463EF #EF8E63 #7EEF63

square

#63C4EF #D463EF #EF8E63 #7EEF63

split-complementary

#63C4EF #EF637E #EFD463

monochromatic

#148EC4 #2BAFE9 #63C4EF #9BD9F5 #D2EEFA

Accessibility & contrast

On white

1.97

#63C4EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.67

#63C4EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63C4EF

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63C4EF	#FFFFFF	#000000	##000000
##63C4EF	1.00	1.97	10.67	10.67
#FFFFFF	1.97	1.00	21.00	21.00
#000000	10.67	21.00	1.00	1.00
##000000	10.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AEC1F1

Deuteranopia (green-blind)

#9AB2EE

Tritanopia (blue-blind)

#00D0D2

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #63c4ef;
/* rgb */ color: rgb(99, 196, 239);
/* oklch */ color: oklch(77.8% 0.110 229.4);

Tailwind

colors: {
  custom: {
    50: '#9bd5f4',
    500: '#63c4ef',
    950: '#000000',
  },
}

SCSS

$custom: #63c4ef;
$custom-light: #9bd5f4;
$custom-dark: #000000;

JSON

{
  "hex": "#63c4ef",
  "rgb": {
    "r": 99,
    "g": 196,
    "b": 239
  },
  "hsl": {
    "h": 198.429,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.77812,
    "c": 0.10984,
    "h": 229.4
  },
  "luminance": 0.48364
}

Semantic roles & 50–950 ramp

primary

#63C4EF

secondary

#EECEC0

accent

#4908DE

background

#FAFDFE

surface

#F4FAFD

border

#CED3D5

text

#0F1417

muted

#7F8385

Preview Lab

Preview with #63C4EF

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

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