#63B4EC#63B4EC

#63B4EC is a light, moderate cyan. Relative luminance 0.414; OKLCH L 74.1% C 0.114 H 240.8°. Best body text is #000000 at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#63B4EC
RGB	rgb(99, 180, 236)
HSL	hsl(205, 78%, 66%)
HSV	hsv(205, 58%, 93%)
CMYK	cmyk(58.1%, 23.7%, 0%, 7.5%)
CIE-LAB	lab(70.42, -8.73, -35.44)
CIE-LCH	lch(70.42, 36.50, 256.16°)
OKLab	oklab(74.1% -0.0555 -0.0993)
OKLCH	oklch(74.1% 0.114 240.8)
XYZ	xyz(36.6015, 41.3479, 85.3927)
Luminance	0.4135 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B4EC #EC9B63

analogous

#63ECE0 #63B4EC #636FEC

triadic

#63B4EC #EC63B4 #B4EC63

tetradic

#63B4EC #E063EC #EC9B63 #6FEC63

square

#63B4EC #E063EC #EC9B63 #6FEC63

split-complementary

#63B4EC #EC636F #ECE063

monochromatic

#1779BE #2C9AE5 #63B4EC #9ACEF3 #D0E8F9

Accessibility & contrast

On white

2.27

#63B4EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.27

#63B4EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B4EC

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B4EC	#FFFFFF	#000000	##000000
##63B4EC	1.00	2.27	9.27	9.27
#FFFFFF	2.27	1.00	21.00	21.00
#000000	9.27	21.00	1.00	1.00
##000000	9.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB4EF

Deuteranopia (green-blind)

#88A6EB

Tritanopia (blue-blind)

#00C2C7

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #63b4ec;
/* rgb */ color: rgb(99, 180, 236);
/* oklch */ color: oklch(74.1% 0.114 240.8);

Tailwind

colors: {
  custom: {
    50: '#9acaf2',
    500: '#63b4ec',
    950: '#000000',
  },
}

SCSS

$custom: #63b4ec;
$custom-light: #9acaf2;
$custom-dark: #000000;

JSON

{
  "hex": "#63b4ec",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 236
  },
  "hsl": {
    "h": 204.526,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.74095,
    "c": 0.11376,
    "h": 240.8
  },
  "luminance": 0.41351
}

Semantic roles & 50–950 ramp

primary

#63B4EC

secondary

#ECD1BF

accent

#600BDB

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B4EC

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

Preview Lab → · Contrast checker → · Palette generator →