#63B4DD#63B4DD

#63B4DD is a light, moderate cyan. Relative luminance 0.405; OKLCH L 73.4% C 0.099 H 232.3°. Best body text is #000000 at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#63B4DD
RGB	rgb(99, 180, 221)
HSL	hsl(200, 64%, 63%)
HSV	hsv(200, 55%, 87%)
CMYK	cmyk(55.2%, 18.6%, 0%, 13.3%)
CIE-LAB	lab(69.83, -13.26, -28.16)
CIE-LCH	lch(69.83, 31.13, 244.79°)
OKLab	oklab(73.44% -0.0606 -0.0785)
OKLCH	oklch(73.44% 0.099 232.3)
XYZ	xyz(34.5131, 40.5125, 74.3935)
Luminance	0.4052 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B4DD #DD8C63

analogous

#63DDC9 #63B4DD #6377DD

triadic

#63B4DD #DD63B4 #B4DD63

tetradic

#63B4DD #C963DD #DD8C63 #77DD63

square

#63B4DD #C963DD #DD8C63 #77DD63

split-complementary

#63B4DD #DD6377 #DDC963

monochromatic

#2378A2 #319CD2 #63B4DD #95CCE8 #C7E4F3

Accessibility & contrast

On white

2.31

#63B4DD on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.10

#63B4DD on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B4DD

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B4DD	#FFFFFF	#000000	##000000
##63B4DD	1.00	2.31	9.10	9.10
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.10	21.00	1.00	1.00
##000000	9.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0B2DF

Deuteranopia (green-blind)

#8FA5DC

Tritanopia (blue-blind)

#00BFC1

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #63b4dd;
/* rgb */ color: rgb(99, 180, 221);
/* oklch */ color: oklch(73.4% 0.099 232.3);

Tailwind

colors: {
  custom: {
    50: '#98cae7',
    500: '#63b4dd',
    950: '#000000',
  },
}

SCSS

$custom: #63b4dd;
$custom-light: #98cae7;
$custom-dark: #000000;

JSON

{
  "hex": "#63b4dd",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 221
  },
  "hsl": {
    "h": 200.164,
    "s": 64.211,
    "l": 62.745
  },
  "oklch": {
    "l": 0.73436,
    "c": 0.09914,
    "h": 232.3
  },
  "luminance": 0.40516
}

Semantic roles & 50–950 ramp

primary

#63B4DD

secondary

#E4C7B8

accent

#5519CC

background

#F9FCFE

surface

#F2F8FC

border

#CCD1D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #63B4DD

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

Preview Lab → · Contrast checker → · Palette generator →