#63B9DE#63B9DE

#63B9DE is a light, moderate cyan. Relative luminance 0.426; OKLCH L 74.6% C 0.099 H 228.3°. Best body text is #000000 at 9.52:1 contrast (WCAG AA passes).

Color values

HEX	#63B9DE
RGB	rgb(99, 185, 222)
HSL	hsl(198, 65%, 63%)
HSV	hsv(198, 55%, 87%)
CMYK	cmyk(55.4%, 16.7%, 0%, 12.9%)
CIE-LAB	lab(71.30, -15.61, -26.46)
CIE-LCH	lch(71.30, 30.72, 239.46°)
OKLab	oklab(74.61% -0.0657 -0.0736)
OKLCH	oklch(74.61% 0.099 228.3)
XYZ	xyz(35.6743, 42.6213, 75.4398)
Luminance	0.4262 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B9DE #DE8863

analogous

#63DEC5 #63B9DE #637BDE

triadic

#63B9DE #DE63B9 #B9DE63

tetradic

#63B9DE #C563DE #DE8863 #7BDE63

square

#63B9DE #C563DE #DE8863 #7BDE63

split-complementary

#63B9DE #DE637B #DEC563

monochromatic

#237DA4 #30A2D3 #63B9DE #96D0E9 #C8E6F3

Accessibility & contrast

On white

2.20

#63B9DE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.52

#63B9DE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B9DE

9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B9DE	#FFFFFF	#000000	##000000
##63B9DE	1.00	2.20	9.52	9.52
#FFFFFF	2.20	1.00	21.00	21.00
#000000	9.52	21.00	1.00	1.00
##000000	9.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A6B6E0

Deuteranopia (green-blind)

#94A9DE

Tritanopia (blue-blind)

#00C4C5

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #63b9de;
/* rgb */ color: rgb(99, 185, 222);
/* oklch */ color: oklch(74.6% 0.099 228.3);

Tailwind

colors: {
  custom: {
    50: '#98cee8',
    500: '#63b9de',
    950: '#000000',
  },
}

SCSS

$custom: #63b9de;
$custom-light: #98cee8;
$custom-dark: #000000;

JSON

{
  "hex": "#63b9de",
  "rgb": {
    "r": 99,
    "g": 185,
    "b": 222
  },
  "hsl": {
    "h": 198.049,
    "s": 65.079,
    "l": 62.941
  },
  "oklch": {
    "l": 0.74614,
    "c": 0.09869,
    "h": 228.3
  },
  "luminance": 0.42624
}

Semantic roles & 50–950 ramp

primary

#63B9DE

secondary

#E5C6B8

accent

#4F19CD

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B9DE

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

Preview Lab → · Contrast checker → · Palette generator →