#63B2E4#63B2E4

#63B2E4 is a light, moderate cyan. Relative luminance 0.401; OKLCH L 73.3% C 0.107 H 238.3°. Best body text is #000000 at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#63B2E4
RGB	rgb(99, 178, 228)
HSL	hsl(203, 70%, 64%)
HSV	hsv(203, 57%, 89%)
CMYK	cmyk(56.6%, 21.9%, 0%, 10.6%)
CIE-LAB	lab(69.53, -10.08, -32.45)
CIE-LCH	lch(69.53, 33.98, 252.74°)
OKLab	oklab(73.29% -0.056 -0.0907)
OKLCH	oklch(73.29% 0.107 238.3)
XYZ	xyz(35.0644, 40.0917, 79.2744)
Luminance	0.4009 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B2E4 #E49563

analogous

#63E4D6 #63B2E4 #6372E4

triadic

#63B2E4 #E463B2 #B2E463

tetradic

#63B2E4 #D663E4 #E49563 #72E463

square

#63B2E4 #D663E4 #E49563 #72E463

split-complementary

#63B2E4 #E46372 #E4D663

monochromatic

#1E77AE #2F98DB #63B2E4 #97CCED #CBE6F6

Accessibility & contrast

On white

2.33

#63B2E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.02

#63B2E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B2E4

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B2E4	#FFFFFF	#000000	##000000
##63B2E4	1.00	2.33	9.02	9.02
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.02	21.00	1.00	1.00
##000000	9.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB1E6

Deuteranopia (green-blind)

#89A4E3

Tritanopia (blue-blind)

#00BFC3

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #63b2e4;
/* rgb */ color: rgb(99, 178, 228);
/* oklch */ color: oklch(73.3% 0.107 238.3);

Tailwind

colors: {
  custom: {
    50: '#99c9ec',
    500: '#63b2e4',
    950: '#000000',
  },
}

SCSS

$custom: #63b2e4;
$custom-light: #99c9ec;
$custom-dark: #000000;

JSON

{
  "hex": "#63b2e4",
  "rgb": {
    "r": 99,
    "g": 178,
    "b": 228
  },
  "hsl": {
    "h": 203.256,
    "s": 70.492,
    "l": 64.118
  },
  "oklch": {
    "l": 0.73289,
    "c": 0.1066,
    "h": 238.3
  },
  "luminance": 0.40095
}

Semantic roles & 50–950 ramp

primary

#63B2E4

secondary

#E8CCBB

accent

#5D13D3

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B2E4

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

Preview Lab → · Contrast checker → · Palette generator →