#63B2E9#63B2E9

#63B2E9 is a light, moderate cyan. Relative luminance 0.404; OKLCH L 73.5% C 0.112 H 240.9°. Best body text is #000000 at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#63B2E9
RGB	rgb(99, 178, 233)
HSL	hsl(205, 75%, 65%)
HSV	hsv(205, 58%, 91%)
CMYK	cmyk(57.5%, 23.6%, 0%, 8.6%)
CIE-LAB	lab(69.73, -8.56, -34.87)
CIE-LCH	lch(69.73, 35.90, 256.21°)
OKLab	oklab(73.51% -0.0543 -0.0977)
OKLCH	oklch(73.51% 0.112 240.9)
XYZ	xyz(35.7685, 40.3734, 82.9829)
Luminance	0.4038 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B2E9 #E99A63

analogous

#63E9DD #63B2E9 #636FE9

triadic

#63B2E9 #E963B2 #B2E963

tetradic

#63B2E9 #DD63E9 #E99A63 #6FE963

square

#63B2E9 #DD63E9 #E99A63 #6FE963

split-complementary

#63B2E9 #E9636F #E9DD63

monochromatic

#1A77B8 #2D98E1 #63B2E9 #99CCF1 #CEE7F8

Accessibility & contrast

On white

2.31

#63B2E9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.08

#63B2E9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B2E9

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B2E9	#FFFFFF	#000000	##000000
##63B2E9	1.00	2.31	9.08	9.08
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.08	21.00	1.00	1.00
##000000	9.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#99B2EC

Deuteranopia (green-blind)

#87A4E8

Tritanopia (blue-blind)

#00C0C5

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #63b2e9;
/* rgb */ color: rgb(99, 178, 233);
/* oklch */ color: oklch(73.5% 0.112 240.9);

Tailwind

colors: {
  custom: {
    50: '#99c8f0',
    500: '#63b2e9',
    950: '#000000',
  },
}

SCSS

$custom: #63b2e9;
$custom-light: #99c8f0;
$custom-dark: #000000;

JSON

{
  "hex": "#63b2e9",
  "rgb": {
    "r": 99,
    "g": 178,
    "b": 233
  },
  "hsl": {
    "h": 204.627,
    "s": 75.281,
    "l": 65.098
  },
  "oklch": {
    "l": 0.73513,
    "c": 0.11176,
    "h": 240.9
  },
  "luminance": 0.40377
}

Semantic roles & 50–950 ramp

primary

#63B2E9

secondary

#EBD0BD

accent

#610ED7

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0F1316

muted

#7E8284

Preview Lab

Preview with #63B2E9

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

Preview Lab → · Contrast checker → · Palette generator →