#63B4E3#63B4E3

#63B4E3 is a light, moderate cyan. Relative luminance 0.408; OKLCH L 73.7% C 0.105 H 236.0°. Best body text is #000000 at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#63B4E3
RGB	rgb(99, 180, 227)
HSL	hsl(202, 70%, 64%)
HSV	hsv(202, 56%, 89%)
CMYK	cmyk(56.4%, 20.7%, 0%, 11%)
CIE-LAB	lab(70.06, -11.46, -31.09)
CIE-LCH	lch(70.06, 33.13, 249.76°)
OKLab	oklab(73.69% -0.0585 -0.0868)
OKLCH	oklch(73.69% 0.105 236)
XYZ	xyz(35.3268, 40.8380, 78.6790)
Luminance	0.4084 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B4E3 #E39263

analogous

#63E3D2 #63B4E3 #6374E3

triadic

#63B4E3 #E363B4 #B4E363

tetradic

#63B4E3 #D263E3 #E39263 #74E363

square

#63B4E3 #D263E3 #E39263 #74E363

split-complementary

#63B4E3 #E36374 #E3D263

monochromatic

#1F79AD #2F9BDA #63B4E3 #97CDEC #CBE6F6

Accessibility & contrast

On white

2.29

#63B4E3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.17

#63B4E3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B4E3

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B4E3	#FFFFFF	#000000	##000000
##63B4E3	1.00	2.29	9.17	9.17
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.17	21.00	1.00	1.00
##000000	9.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9EB3E5

Deuteranopia (green-blind)

#8CA5E2

Tritanopia (blue-blind)

#00C0C4

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #63b4e3;
/* rgb */ color: rgb(99, 180, 227);
/* oklch */ color: oklch(73.7% 0.105 236.0);

Tailwind

colors: {
  custom: {
    50: '#99caec',
    500: '#63b4e3',
    950: '#000000',
  },
}

SCSS

$custom: #63b4e3;
$custom-light: #99caec;
$custom-dark: #000000;

JSON

{
  "hex": "#63b4e3",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 227
  },
  "hsl": {
    "h": 202.031,
    "s": 69.565,
    "l": 63.922
  },
  "oklch": {
    "l": 0.73694,
    "c": 0.10469,
    "h": 236
  },
  "luminance": 0.40841
}

Semantic roles & 50–950 ramp

primary

#63B4E3

secondary

#E7CBBA

accent

#5A14D2

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B4E3

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

Preview Lab → · Contrast checker → · Palette generator →