#63B4E4#63B4E4

#63B4E4 is a light, moderate cyan. Relative luminance 0.409; OKLCH L 73.7% C 0.106 H 236.6°. Best body text is #000000 at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#63B4E4
RGB	rgb(99, 180, 228)
HSL	hsl(202, 70%, 64%)
HSV	hsv(202, 57%, 89%)
CMYK	cmyk(56.6%, 21.1%, 0%, 10.6%)
CIE-LAB	lab(70.10, -11.16, -31.57)
CIE-LCH	lch(70.10, 33.49, 250.53°)
OKLab	oklab(73.74% -0.0581 -0.0882)
OKLCH	oklch(73.74% 0.106 236.6)
XYZ	xyz(35.4652, 40.8934, 79.4080)
Luminance	0.4090 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B4E4 #E49363

analogous

#63E4D4 #63B4E4 #6374E4

triadic

#63B4E4 #E463B4 #B4E463

tetradic

#63B4E4 #D463E4 #E49363 #74E463

square

#63B4E4 #D463E4 #E49363 #74E463

split-complementary

#63B4E4 #E46374 #E4D463

monochromatic

#1E79AE #2F9BDB #63B4E4 #97CDED #CBE6F6

Accessibility & contrast

On white

2.29

#63B4E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.18

#63B4E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B4E4

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B4E4	#FFFFFF	#000000	##000000
##63B4E4	1.00	2.29	9.18	9.18
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.18	21.00	1.00	1.00
##000000	9.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EB3E6

Deuteranopia (green-blind)

#8CA5E3

Tritanopia (blue-blind)

#00C0C4

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #63b4e4;
/* rgb */ color: rgb(99, 180, 228);
/* oklch */ color: oklch(73.7% 0.106 236.6);

Tailwind

colors: {
  custom: {
    50: '#99caec',
    500: '#63b4e4',
    950: '#000000',
  },
}

SCSS

$custom: #63b4e4;
$custom-light: #99caec;
$custom-dark: #000000;

JSON

{
  "hex": "#63b4e4",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 228
  },
  "hsl": {
    "h": 202.326,
    "s": 70.492,
    "l": 64.118
  },
  "oklch": {
    "l": 0.73738,
    "c": 0.10566,
    "h": 236.6
  },
  "luminance": 0.40897
}

Semantic roles & 50–950 ramp

primary

#63B4E4

secondary

#E8CCBB

accent

#5A13D3

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B4E4

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

Preview Lab → · Contrast checker → · Palette generator →