#3FB3E4#3FB3E4

#3FB3E4 is a light, vivid cyan. Relative luminance 0.389; OKLCH L 72.3% C 0.124 H 230.3°. Best body text is #000000 at 8.78:1 contrast (WCAG AA passes).

Color values

HEX	#3FB3E4
RGB	rgb(63, 179, 228)
HSL	hsl(198, 75%, 57%)
HSV	hsv(198, 72%, 89%)
CMYK	cmyk(72.4%, 21.5%, 0%, 10.6%)
CIE-LAB	lab(68.67, -16.54, -33.87)
CIE-LCH	lch(68.67, 37.69, 243.98°)
OKLab	oklab(72.28% -0.0789 -0.0951)
OKLCH	oklch(72.28% 0.124 230.3)
XYZ	xyz(32.1679, 38.8947, 79.1958)
Luminance	0.3890 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3FB3E4 #E4703F

analogous

#3FE4C2 #3FB3E4 #3F61E4

triadic

#3FB3E4 #E43FB3 #B3E43F

tetradic

#3FB3E4 #C23FE4 #E4703F #61E43F

square

#3FB3E4 #C23FE4 #E4703F #61E43F

split-complementary

#3FB3E4 #E43F61 #E4C23F

monochromatic

#156E94 #1C96C9 #3FB3E4 #75C8EC #AADDF3

Accessibility & contrast

On white

2.39

#3FB3E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.78

#3FB3E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3FB3E4

8.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3FB3E4	#FFFFFF	#000000	##000000
##3FB3E4	1.00	2.39	8.78	8.78
#FFFFFF	2.39	1.00	21.00	21.00
#000000	8.78	21.00	1.00	1.00
##000000	8.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9AB1E6

Deuteranopia (green-blind)

#84A0E3

Tritanopia (blue-blind)

#00C1C3

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #3fb3e4;
/* rgb */ color: rgb(63, 179, 228);
/* oklch */ color: oklch(72.3% 0.124 230.3);

Tailwind

colors: {
  custom: {
    50: '#89c9ec',
    500: '#3fb3e4',
    950: '#000000',
  },
}

SCSS

$custom: #3fb3e4;
$custom-light: #89c9ec;
$custom-dark: #000000;

JSON

{
  "hex": "#3fb3e4",
  "rgb": {
    "r": 63,
    "g": 179,
    "b": 228
  },
  "hsl": {
    "h": 197.818,
    "s": 75.342,
    "l": 57.059
  },
  "oklch": {
    "l": 0.72284,
    "c": 0.12358,
    "h": 230.3
  },
  "luminance": 0.38898
}

Semantic roles & 50–950 ramp

primary

#3FB3E4

secondary

#E1B29E

accent

#6E36F2

background

#F9FCFE

surface

#F1F8FD

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #3FB3E4

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

Preview Lab → · Contrast checker → · Palette generator →