#63B0EB#63B0EB

#63B0EB is a light, moderate cyan. Relative luminance 0.397; OKLCH L 73.2% C 0.115 H 243.4°. Best body text is #000000 at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#63B0EB
RGB	rgb(99, 176, 235)
HSL	hsl(206, 77%, 65%)
HSV	hsv(206, 58%, 92%)
CMYK	cmyk(57.9%, 25.1%, 0%, 7.8%)
CIE-LAB	lab(69.25, -6.85, -36.70)
CIE-LCH	lch(69.25, 37.34, 259.43°)
OKLab	oklab(73.16% -0.0515 -0.103)
OKLCH	oklch(73.16% 0.115 243.4)
XYZ	xyz(35.6608, 39.6982, 84.3644)
Luminance	0.3970 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B0EB #EB9E63

analogous

#63EBE2 #63B0EB #636CEB

triadic

#63B0EB #EB63B0 #B0EB63

tetradic

#63B0EB #E263EB #EB9E63 #6CEB63

square

#63B0EB #E263EB #EB9E63 #6CEB63

split-complementary

#63B0EB #EB636C #EBE263

monochromatic

#1875BC #2D95E4 #63B0EB #99CBF2 #CFE7F9

Accessibility & contrast

On white

2.35

#63B0EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.94

#63B0EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B0EB

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B0EB	#FFFFFF	#000000	##000000
##63B0EB	1.00	2.35	8.94	8.94
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.94	21.00	1.00	1.00
##000000	8.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#96B1EE

Deuteranopia (green-blind)

#84A3EA

Tritanopia (blue-blind)

#00BEC4

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #63b0eb;
/* rgb */ color: rgb(99, 176, 235);
/* oklch */ color: oklch(73.2% 0.115 243.4);

Tailwind

colors: {
  custom: {
    50: '#99c7f1',
    500: '#63b0eb',
    950: '#000000',
  },
}

SCSS

$custom: #63b0eb;
$custom-light: #99c7f1;
$custom-dark: #000000;

JSON

{
  "hex": "#63b0eb",
  "rgb": {
    "r": 99,
    "g": 176,
    "b": 235
  },
  "hsl": {
    "h": 206.029,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.7316,
    "c": 0.11515,
    "h": 243.4
  },
  "luminance": 0.39701
}

Semantic roles & 50–950 ramp

primary

#63B0EB

secondary

#ECD2BE

accent

#650CDA

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B0EB

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

Preview Lab → · Contrast checker → · Palette generator →