#63B9DB#63B9DB

#63B9DB is a light, moderate cyan. Relative luminance 0.425; OKLCH L 74.5% C 0.096 H 226.1°. Best body text is #000000 at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#63B9DB
RGB	rgb(99, 185, 219)
HSL	hsl(197, 63%, 62%)
HSV	hsv(197, 55%, 86%)
CMYK	cmyk(54.8%, 15.5%, 0%, 14.1%)
CIE-LAB	lab(71.19, -16.49, -24.99)
CIE-LCH	lch(71.19, 29.94, 236.58°)
OKLab	oklab(74.49% -0.0668 -0.0695)
OKLCH	oklch(74.49% 0.096 226.1)
XYZ	xyz(35.2759, 42.4619, 73.3411)
Luminance	0.4247 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B9DB #DB8563

analogous

#63DBC1 #63B9DB #637DDB

triadic

#63B9DB #DB63B9 #B9DB63

tetradic

#63B9DB #C163DB #DB8563 #7DDB63

square

#63B9DB #C163DB #DB8563 #7DDB63

split-complementary

#63B9DB #DB637D #DBC163

monochromatic

#257C9F #31A3D0 #63B9DB #95CFE6 #C6E6F2

Accessibility & contrast

On white

2.21

#63B9DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.49

#63B9DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B9DB

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B9DB	#FFFFFF	#000000	##000000
##63B9DB	1.00	2.21	9.49	9.49
#FFFFFF	2.21	1.00	21.00	21.00
#000000	9.49	21.00	1.00	1.00
##000000	9.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7B6DD

Deuteranopia (green-blind)

#95A9DB

Tritanopia (blue-blind)

#00C3C4

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #63b9db;
/* rgb */ color: rgb(99, 185, 219);
/* oklch */ color: oklch(74.5% 0.096 226.1);

Tailwind

colors: {
  custom: {
    50: '#98cee6',
    500: '#63b9db',
    950: '#000000',
  },
}

SCSS

$custom: #63b9db;
$custom-light: #98cee6;
$custom-dark: #000000;

JSON

{
  "hex": "#63b9db",
  "rgb": {
    "r": 99,
    "g": 185,
    "b": 219
  },
  "hsl": {
    "h": 197,
    "s": 62.5,
    "l": 62.353
  },
  "oklch": {
    "l": 0.74491,
    "c": 0.09638,
    "h": 226.1
  },
  "luminance": 0.42465
}

Semantic roles & 50–950 ramp

primary

#63B9DB

secondary

#E3C3B7

accent

#4D1BCA

background

#F9FCFE

surface

#F2F9FC

border

#CCD2D5

text

#0E1316

muted

#7E8284

Preview Lab

Preview with #63B9DB

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

Preview Lab → · Contrast checker → · Palette generator →