#63B2E7#63B2E7

#63B2E7 is a light, moderate cyan. Relative luminance 0.403; OKLCH L 73.4% C 0.110 H 239.9°. Best body text is #000000 at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#63B2E7
RGB	rgb(99, 178, 231)
HSL	hsl(204, 73%, 65%)
HSV	hsv(204, 57%, 91%)
CMYK	cmyk(57.1%, 22.9%, 0%, 9.4%)
CIE-LAB	lab(69.65, -9.17, -33.90)
CIE-LCH	lch(69.65, 35.12, 254.86°)
OKLab	oklab(73.42% -0.055 -0.0949)
OKLCH	oklch(73.42% 0.11 239.9)
XYZ	xyz(35.4844, 40.2597, 81.4867)
Luminance	0.4026 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B2E7 #E79863

analogous

#63E7DA #63B2E7 #6370E7

triadic

#63B2E7 #E763B2 #B2E763

tetradic

#63B2E7 #DA63E7 #E79863 #70E763

square

#63B2E7 #DA63E7 #E79863 #70E763

split-complementary

#63B2E7 #E76370 #E7DA63

monochromatic

#1C77B4 #2E98DF #63B2E7 #98CCEF #CDE6F7

Accessibility & contrast

On white

2.32

#63B2E7 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.05

#63B2E7 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B2E7

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B2E7	#FFFFFF	#000000	##000000
##63B2E7	1.00	2.32	9.05	9.05
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.05	21.00	1.00	1.00
##000000	9.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB2E9

Deuteranopia (green-blind)

#88A4E6

Tritanopia (blue-blind)

#00BFC4

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #63b2e7;
/* rgb */ color: rgb(99, 178, 231);
/* oklch */ color: oklch(73.4% 0.110 239.9);

Tailwind

colors: {
  custom: {
    50: '#99c8ee',
    500: '#63b2e7',
    950: '#000000',
  },
}

SCSS

$custom: #63b2e7;
$custom-light: #99c8ee;
$custom-dark: #000000;

JSON

{
  "hex": "#63b2e7",
  "rgb": {
    "r": 99,
    "g": 178,
    "b": 231
  },
  "hsl": {
    "h": 204.091,
    "s": 73.333,
    "l": 64.706
  },
  "oklch": {
    "l": 0.73423,
    "c": 0.10967,
    "h": 239.9
  },
  "luminance": 0.40263
}

Semantic roles & 50–950 ramp

primary

#63B2E7

secondary

#EACEBC

accent

#5F10D5

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B2E7

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

Preview Lab → · Contrast checker → · Palette generator →