#63B5EA#63B5EA

#63B5EA is a light, moderate cyan. Relative luminance 0.416; OKLCH L 74.2% C 0.111 H 239.0°. Best body text is #000000 at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#63B5EA
RGB	rgb(99, 181, 234)
HSL	hsl(204, 76%, 65%)
HSV	hsv(204, 58%, 92%)
CMYK	cmyk(57.7%, 22.6%, 0%, 8.2%)
CIE-LAB	lab(70.62, -9.88, -34.04)
CIE-LCH	lch(70.62, 35.45, 253.81°)
OKLab	oklab(74.23% -0.0572 -0.0953)
OKLCH	oklch(74.23% 0.111 239)
XYZ	xyz(36.5152, 41.6376, 83.9385)
Luminance	0.4164 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B5EA #EA9863

analogous

#63EADC #63B5EA #6371EA

triadic

#63B5EA #EA63B5 #B5EA63

tetradic

#63B5EA #DC63EA #EA9863 #71EA63

square

#63B5EA #DC63EA #EA9863 #71EA63

split-complementary

#63B5EA #EA6371 #EADC63

monochromatic

#197BBA #2D9BE3 #63B5EA #99CFF1 #CFE8F9

Accessibility & contrast

On white

2.25

#63B5EA on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.33

#63B5EA on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B5EA

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B5EA	#FFFFFF	#000000	##000000
##63B5EA	1.00	2.25	9.33	9.33
#FFFFFF	2.25	1.00	21.00	21.00
#000000	9.33	21.00	1.00	1.00
##000000	9.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DB5ED

Deuteranopia (green-blind)

#8AA7E9

Tritanopia (blue-blind)

#00C2C7

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #63b5ea;
/* rgb */ color: rgb(99, 181, 234);
/* oklch */ color: oklch(74.2% 0.111 239.0);

Tailwind

colors: {
  custom: {
    50: '#99cbf1',
    500: '#63b5ea',
    950: '#000000',
  },
}

SCSS

$custom: #63b5ea;
$custom-light: #99cbf1;
$custom-dark: #000000;

JSON

{
  "hex": "#63b5ea",
  "rgb": {
    "r": 99,
    "g": 181,
    "b": 234
  },
  "hsl": {
    "h": 203.556,
    "s": 76.271,
    "l": 65.294
  },
  "oklch": {
    "l": 0.74227,
    "c": 0.11114,
    "h": 239
  },
  "luminance": 0.41641
}

Semantic roles & 50–950 ramp

primary

#63B5EA

secondary

#EBD0BE

accent

#5D0DD8

background

#FAFCFE

surface

#F3F8FD

border

#CDD1D5

text

#0F1316

muted

#7F8284

Preview Lab

Preview with #63B5EA

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

Preview Lab → · Contrast checker → · Palette generator →