#63A5EB#63A5EB

#63A5EB is a light, vivid cyan. Relative luminance 0.356; OKLCH L 70.7% C 0.123 H 251.2°. Best body text is #000000 at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#63A5EB
RGB	rgb(99, 165, 235)
HSL	hsl(211, 77%, 65%)
HSV	hsv(211, 58%, 92%)
CMYK	cmyk(57.9%, 29.8%, 0%, 7.8%)
CIE-LAB	lab(66.18, -0.72, -41.50)
CIE-LCH	lch(66.18, 41.51, 269.00°)
OKLab	oklab(70.74% -0.0397 -0.1169)
OKLCH	oklch(70.74% 0.123 251.2)
XYZ	xyz(33.5907, 35.5581, 83.6744)
Luminance	0.3556 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63A5EB #EBA963

analogous

#63E9EB #63A5EB #6563EB

triadic

#63A5EB #EB63A5 #A5EB63

tetradic

#63A5EB #EB63E9 #EBA963 #63EB65

square

#63A5EB #EB63E9 #EBA963 #63EB65

split-complementary

#63A5EB #EB6563 #E9EB63

monochromatic

#1867BC #2D86E4 #63A5EB #99C4F2 #CFE4F9

Accessibility & contrast

On white

2.59

#63A5EB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.11

#63A5EB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63A5EB

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63A5EB	#FFFFFF	#000000	##000000
##63A5EB	1.00	2.59	8.11	8.11
#FFFFFF	2.59	1.00	21.00	21.00
#000000	8.11	21.00	1.00	1.00
##000000	8.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#88A8EE

Deuteranopia (green-blind)

#769BEA

Tritanopia (blue-blind)

#00B5BE

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #63a5eb;
/* rgb */ color: rgb(99, 165, 235);
/* oklch */ color: oklch(70.7% 0.123 251.2);

Tailwind

colors: {
  custom: {
    50: '#99bff1',
    500: '#63a5eb',
    950: '#000000',
  },
}

SCSS

$custom: #63a5eb;
$custom-light: #99bff1;
$custom-dark: #000000;

JSON

{
  "hex": "#63a5eb",
  "rgb": {
    "r": 99,
    "g": 165,
    "b": 235
  },
  "hsl": {
    "h": 210.882,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.7074,
    "c": 0.12347,
    "h": 251.2
  },
  "luminance": 0.35561
}

Semantic roles & 50–950 ramp

primary

#63A5EB

secondary

#ECD6BE

accent

#760CDA

background

#F9FBFE

surface

#F2F7FD

border

#CCD0D5

text

#0F1217

muted

#7E8185

Preview Lab

Preview with #63A5EB

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

Preview Lab → · Contrast checker → · Palette generator →