#63B2E5#63B2E5

#63B2E5 is a light, moderate cyan. Relative luminance 0.402; OKLCH L 73.3% C 0.108 H 238.9°. Best body text is #000000 at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#63B2E5
RGB	rgb(99, 178, 229)
HSL	hsl(204, 71%, 64%)
HSV	hsv(204, 57%, 90%)
CMYK	cmyk(56.8%, 22.3%, 0%, 10.2%)
CIE-LAB	lab(69.57, -9.78, -32.93)
CIE-LCH	lch(69.57, 34.36, 253.46°)
OKLab	oklab(73.33% -0.0556 -0.0921)
OKLCH	oklch(73.33% 0.108 238.9)
XYZ	xyz(35.2036, 40.1474, 80.0076)
Luminance	0.4015 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B2E5 #E59663

analogous

#63E5D7 #63B2E5 #6371E5

triadic

#63B2E5 #E563B2 #B2E563

tetradic

#63B2E5 #D763E5 #E59663 #71E563

square

#63B2E5 #D763E5 #E59663 #71E563

split-complementary

#63B2E5 #E56371 #E5D763

monochromatic

#1D77B0 #2F98DC #63B2E5 #97CCEE #CCE6F6

Accessibility & contrast

On white

2.33

#63B2E5 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.03

#63B2E5 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B2E5

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B2E5	#FFFFFF	#000000	##000000
##63B2E5	1.00	2.33	9.03	9.03
#FFFFFF	2.33	1.00	21.00	21.00
#000000	9.03	21.00	1.00	1.00
##000000	9.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB1E7

Deuteranopia (green-blind)

#89A4E4

Tritanopia (blue-blind)

#00BFC3

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #63b2e5;
/* rgb */ color: rgb(99, 178, 229);
/* oklch */ color: oklch(73.3% 0.108 238.9);

Tailwind

colors: {
  custom: {
    50: '#99c9ed',
    500: '#63b2e5',
    950: '#000000',
  },
}

SCSS

$custom: #63b2e5;
$custom-light: #99c9ed;
$custom-dark: #000000;

JSON

{
  "hex": "#63b2e5",
  "rgb": {
    "r": 99,
    "g": 178,
    "b": 229
  },
  "hsl": {
    "h": 203.538,
    "s": 71.429,
    "l": 64.314
  },
  "oklch": {
    "l": 0.73333,
    "c": 0.10761,
    "h": 238.9
  },
  "luminance": 0.40151
}

Semantic roles & 50–950 ramp

primary

#63B2E5

secondary

#E8CDBB

accent

#5E12D3

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B2E5

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

Preview Lab → · Contrast checker → · Palette generator →