#63B2EF#63B2EF

#63B2EF is a light, moderate cyan. Relative luminance 0.407; OKLCH L 73.8% C 0.118 H 243.7°. Best body text is #000000 at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#63B2EF
RGB	rgb(99, 178, 239)
HSL	hsl(206, 81%, 66%)
HSV	hsv(206, 59%, 94%)
CMYK	cmyk(58.6%, 25.5%, 0%, 6.3%)
CIE-LAB	lab(69.98, -6.71, -37.75)
CIE-LCH	lch(69.98, 38.34, 259.92°)
OKLab	oklab(73.79% -0.0524 -0.106)
OKLCH	oklch(73.79% 0.118 243.7)
XYZ	xyz(36.6402, 40.7221, 87.5739)
Luminance	0.4073 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B2EF #EFA063

analogous

#63EFE6 #63B2EF #636CEF

triadic

#63B2EF #EF63B2 #B2EF63

tetradic

#63B2EF #E663EF #EFA063 #6CEF63

square

#63B2EF #E663EF #EFA063 #6CEF63

split-complementary

#63B2EF #EF636C #EFE663

monochromatic

#1477C4 #2B97E9 #63B2EF #9BCDF5 #D2E9FA

Accessibility & contrast

On white

2.30

#63B2EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.15

#63B2EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B2EF

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B2EF	#FFFFFF	#000000	##000000
##63B2EF	1.00	2.30	9.15	9.15
#FFFFFF	2.30	1.00	21.00	21.00
#000000	9.15	21.00	1.00	1.00
##000000	9.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#97B3F2

Deuteranopia (green-blind)

#84A5EE

Tritanopia (blue-blind)

#00C1C7

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #63b2ef;
/* rgb */ color: rgb(99, 178, 239);
/* oklch */ color: oklch(73.8% 0.118 243.7);

Tailwind

colors: {
  custom: {
    50: '#9ac8f4',
    500: '#63b2ef',
    950: '#000000',
  },
}

SCSS

$custom: #63b2ef;
$custom-light: #9ac8f4;
$custom-dark: #000000;

JSON

{
  "hex": "#63b2ef",
  "rgb": {
    "r": 99,
    "g": 178,
    "b": 239
  },
  "hsl": {
    "h": 206.143,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.73789,
    "c": 0.11823,
    "h": 243.7
  },
  "luminance": 0.40725
}

Semantic roles & 50–950 ramp

primary

#63B2EF

secondary

#EED4C0

accent

#6508DE

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B2EF

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

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