#3FB4E4#3FB4E4

#3FB4E4 is a light, vivid cyan. Relative luminance 0.393; OKLCH L 72.5% C 0.123 H 229.6°. Best body text is #000000 at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#3FB4E4
RGB	rgb(63, 180, 228)
HSL	hsl(197, 75%, 57%)
HSV	hsv(197, 72%, 89%)
CMYK	cmyk(72.4%, 21.1%, 0%, 10.6%)
CIE-LAB	lab(68.97, -17.06, -33.42)
CIE-LCH	lch(68.97, 37.53, 242.95°)
OKLab	oklab(72.52% -0.0798 -0.0938)
OKLCH	oklch(72.52% 0.123 229.6)
XYZ	xyz(32.3691, 39.2970, 79.2629)
Luminance	0.3930 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3FB4E4 #E46F3F

analogous

#3FE4C2 #3FB4E4 #3F61E4

triadic

#3FB4E4 #E43FB4 #B4E43F

tetradic

#3FB4E4 #C23FE4 #E46F3F #61E43F

square

#3FB4E4 #C23FE4 #E46F3F #61E43F

split-complementary

#3FB4E4 #E43F61 #E4C23F

monochromatic

#156F94 #1C97C9 #3FB4E4 #75C9EC #AADEF3

Accessibility & contrast

On white

2.37

#3FB4E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.86

#3FB4E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3FB4E4

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3FB4E4	#FFFFFF	#000000	##000000
##3FB4E4	1.00	2.37	8.86	8.86
#FFFFFF	2.37	1.00	21.00	21.00
#000000	8.86	21.00	1.00	1.00
##000000	8.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9BB1E6

Deuteranopia (green-blind)

#85A1E3

Tritanopia (blue-blind)

#00C1C4

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #3fb4e4;
/* rgb */ color: rgb(63, 180, 228);
/* oklch */ color: oklch(72.5% 0.123 229.6);

Tailwind

colors: {
  custom: {
    50: '#89caec',
    500: '#3fb4e4',
    950: '#000000',
  },
}

SCSS

$custom: #3fb4e4;
$custom-light: #89caec;
$custom-dark: #000000;

JSON

{
  "hex": "#3fb4e4",
  "rgb": {
    "r": 63,
    "g": 180,
    "b": 228
  },
  "hsl": {
    "h": 197.455,
    "s": 75.342,
    "l": 57.059
  },
  "oklch": {
    "l": 0.72516,
    "c": 0.12319,
    "h": 229.6
  },
  "luminance": 0.39301
}

Semantic roles & 50–950 ramp

primary

#3FB4E4

secondary

#E1B19E

accent

#6D36F2

background

#F9FCFE

surface

#F1F8FD

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #3FB4E4

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

Preview Lab → · Contrast checker → · Palette generator →