#63B4CB#63B4CB

#63B4CB is a light, moderate cyan. Relative luminance 0.396; OKLCH L 72.7% C 0.086 H 218.4°. Best body text is #000000 at 8.92:1 contrast (WCAG AA passes).

Color values

HEX	#63B4CB
RGB	rgb(99, 180, 203)
HSL	hsl(193, 50%, 59%)
HSV	hsv(193, 51%, 80%)
CMYK	cmyk(51.2%, 11.3%, 0%, 20.4%)
CIE-LAB	lab(69.19, -18.47, -19.28)
CIE-LCH	lch(69.19, 26.70, 226.23°)
OKLab	oklab(72.71% -0.0672 -0.0533)
OKLCH	oklch(72.71% 0.086 218.4)
XYZ	xyz(32.2422, 39.6042, 62.4336)
Luminance	0.3961 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B4CB #CB7A63

analogous

#63CBAE #63B4CB #6380CB

triadic

#63B4CB #CB63B4 #B4CB63

tetradic

#63B4CB #AE63CB #CB7A63 #80CB63

square

#63B4CB #AE63CB #CB7A63 #80CB63

split-complementary

#63B4CB #CB6380 #CBAE63

monochromatic

#2D7387 #3C9AB5 #63B4CB #91CADA #BFE0EA

Accessibility & contrast

On white

2.35

#63B4CB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.92

#63B4CB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B4CB

8.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B4CB	#FFFFFF	#000000	##000000
##63B4CB	1.00	2.35	8.92	8.92
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.92	21.00	1.00	1.00
##000000	8.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A5B0CC

Deuteranopia (green-blind)

#95A4CB

Tritanopia (blue-blind)

#21BCBB

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #63b4cb;
/* rgb */ color: rgb(99, 180, 203);
/* oklch */ color: oklch(72.7% 0.086 218.4);

Tailwind

colors: {
  custom: {
    50: '#96cada',
    500: '#63b4cb',
    950: '#000000',
  },
}

SCSS

$custom: #63b4cb;
$custom-light: #96cada;
$custom-dark: #000000;

JSON

{
  "hex": "#63b4cb",
  "rgb": {
    "r": 99,
    "g": 180,
    "b": 203
  },
  "hsl": {
    "h": 193.269,
    "s": 50,
    "l": 59.216
  },
  "oklch": {
    "l": 0.72707,
    "c": 0.08584,
    "h": 218.4
  },
  "luminance": 0.39607
}

Semantic roles & 50–950 ramp

primary

#63B4CB

secondary

#D9BAB1

accent

#6D4EDA

background

#F9FCFD

surface

#F2F8FA

border

#CCD1D3

text

#0E1315

muted

#7E8283

Preview Lab

Preview with #63B4CB

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

Preview Lab → · Contrast checker → · Palette generator →