#63B9F1#63B9F1

#63B9F1 is a light, moderate cyan. Relative luminance 0.437; OKLCH L 75.4% C 0.116 H 239.4°. Best body text is #000000 at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#63B9F1
RGB	rgb(99, 185, 241)
HSL	hsl(204, 84%, 67%)
HSV	hsv(204, 59%, 95%)
CMYK	cmyk(58.9%, 23.2%, 0%, 5.5%)
CIE-LAB	lab(72.03, -9.90, -35.66)
CIE-LCH	lch(72.03, 37.01, 254.48°)
OKLab	oklab(75.43% -0.0592 -0.0999)
OKLCH	oklch(75.43% 0.116 239.4)
XYZ	xyz(38.3658, 43.6978, 89.6147)
Luminance	0.4370 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63B9F1 #F19B63

analogous

#63F1E2 #63B9F1 #6372F1

triadic

#63B9F1 #F163B9 #B9F163

tetradic

#63B9F1 #E263F1 #F19B63 #72F163

square

#63B9F1 #E263F1 #F19B63 #72F163

split-complementary

#63B9F1 #F16372 #F1E263

monochromatic

#1280C8 #2BA0EC #63B9F1 #9BD2F6 #D3EBFB

Accessibility & contrast

On white

2.16

#63B9F1 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.74

#63B9F1 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #63B9F1

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63B9F1	#FFFFFF	#000000	##000000
##63B9F1	1.00	2.16	9.74	9.74
#FFFFFF	2.16	1.00	21.00	21.00
#000000	9.74	21.00	1.00	1.00
##000000	9.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A0B9F4

Deuteranopia (green-blind)

#8CAAF0

Tritanopia (blue-blind)

#00C7CC

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #63b9f1;
/* rgb */ color: rgb(99, 185, 241);
/* oklch */ color: oklch(75.4% 0.116 239.4);

Tailwind

colors: {
  custom: {
    50: '#9acdf6',
    500: '#63b9f1',
    950: '#000000',
  },
}

SCSS

$custom: #63b9f1;
$custom-light: #9acdf6;
$custom-dark: #000000;

JSON

{
  "hex": "#63b9f1",
  "rgb": {
    "r": 99,
    "g": 185,
    "b": 241
  },
  "hsl": {
    "h": 203.662,
    "s": 83.529,
    "l": 66.667
  },
  "oklch": {
    "l": 0.75434,
    "c": 0.11612,
    "h": 239.4
  },
  "luminance": 0.43701
}

Semantic roles & 50–950 ramp

primary

#63B9F1

secondary

#EFD3C1

accent

#5C06E0

background

#FAFCFF

surface

#F3F9FE

border

#CDD2D6

text

#0F1317

muted

#7F8285

Preview Lab

Preview with #63B9F1

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

Preview Lab → · Contrast checker → · Palette generator →