#63AEE9#63AEE9

#63AEE9 is a light, moderate cyan. Relative luminance 0.388; OKLCH L 72.6% C 0.114 H 244.0°. Best body text is #000000 at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#63AEE9
RGB	rgb(99, 174, 233)
HSL	hsl(206, 75%, 65%)
HSV	hsv(206, 58%, 91%)
CMYK	cmyk(57.5%, 25.3%, 0%, 8.6%)
CIE-LAB	lab(68.61, -6.37, -36.62)
CIE-LCH	lch(68.61, 37.17, 260.13°)
OKLab	oklab(72.62% -0.05 -0.1027)
OKLCH	oklch(72.62% 0.114 244)
XYZ	xyz(34.9842, 38.8048, 82.7214)
Luminance	0.3881 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63AEE9 #E99E63

analogous

#63E9E1 #63AEE9 #636BE9

triadic

#63AEE9 #E963AE #AEE963

tetradic

#63AEE9 #E163E9 #E99E63 #6BE963

square

#63AEE9 #E163E9 #E99E63 #6BE963

split-complementary

#63AEE9 #E9636B #E9E163

monochromatic

#1A72B8 #2D92E1 #63AEE9 #99CAF1 #CEE6F8

Accessibility & contrast

On white

2.40

#63AEE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.76

#63AEE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63AEE9

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63AEE9	#FFFFFF	#000000	##000000
##63AEE9	1.00	2.40	8.76	8.76
#FFFFFF	2.40	1.00	21.00	21.00
#000000	8.76	21.00	1.00	1.00
##000000	8.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94AFEC

Deuteranopia (green-blind)

#82A1E8

Tritanopia (blue-blind)

#00BCC2

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #63aee9;
/* rgb */ color: rgb(99, 174, 233);
/* oklch */ color: oklch(72.6% 0.114 244.0);

Tailwind

colors: {
  custom: {
    50: '#99c6f0',
    500: '#63aee9',
    950: '#000000',
  },
}

SCSS

$custom: #63aee9;
$custom-light: #99c6f0;
$custom-dark: #000000;

JSON

{
  "hex": "#63aee9",
  "rgb": {
    "r": 99,
    "g": 174,
    "b": 233
  },
  "hsl": {
    "h": 206.418,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.72624,
    "c": 0.11425,
    "h": 244
  },
  "luminance": 0.38808
}

Semantic roles & 50–950 ramp

primary

#63AEE9

secondary

#EBD1BD

accent

#670ED7

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63AEE9

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

Preview Lab → · Contrast checker → · Palette generator →