#3FB5E4#3FB5E4

#3FB5E4 is a light, vivid cyan. Relative luminance 0.397; OKLCH L 72.7% C 0.123 H 228.9°. Best body text is #000000 at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#3FB5E4
RGB	rgb(63, 181, 228)
HSL	hsl(197, 75%, 57%)
HSV	hsv(197, 72%, 89%)
CMYK	cmyk(72.4%, 20.6%, 0%, 10.6%)
CIE-LAB	lab(69.26, -17.59, -32.97)
CIE-LCH	lch(69.26, 37.37, 241.92°)
OKLab	oklab(72.75% -0.0808 -0.0925)
OKLCH	oklch(72.75% 0.123 228.9)
XYZ	xyz(32.5717, 39.7022, 79.3304)
Luminance	0.3971 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3FB5E4 #E46E3F

analogous

#3FE4C1 #3FB5E4 #3F63E4

triadic

#3FB5E4 #E43FB5 #B5E43F

tetradic

#3FB5E4 #C13FE4 #E46E3F #63E43F

square

#3FB5E4 #C13FE4 #E46E3F #63E43F

split-complementary

#3FB5E4 #E43F63 #E4C13F

monochromatic

#157094 #1C98C9 #3FB5E4 #75CAEC #AADEF3

Accessibility & contrast

On white

2.35

#3FB5E4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.94

#3FB5E4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3FB5E4

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3FB5E4	#FFFFFF	#000000	##000000
##3FB5E4	1.00	2.35	8.94	8.94
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.94	21.00	1.00	1.00
##000000	8.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9DB2E6

Deuteranopia (green-blind)

#86A2E3

Tritanopia (blue-blind)

#00C2C5

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #3fb5e4;
/* rgb */ color: rgb(63, 181, 228);
/* oklch */ color: oklch(72.7% 0.123 228.9);

Tailwind

colors: {
  custom: {
    50: '#89cbec',
    500: '#3fb5e4',
    950: '#000000',
  },
}

SCSS

$custom: #3fb5e4;
$custom-light: #89cbec;
$custom-dark: #000000;

JSON

{
  "hex": "#3fb5e4",
  "rgb": {
    "r": 63,
    "g": 181,
    "b": 228
  },
  "hsl": {
    "h": 197.091,
    "s": 75.342,
    "l": 57.059
  },
  "oklch": {
    "l": 0.72749,
    "c": 0.12283,
    "h": 228.9
  },
  "luminance": 0.39706
}

Semantic roles & 50–950 ramp

primary

#3FB5E4

secondary

#E1B19E

accent

#6B36F2

background

#F9FCFE

surface

#F1F8FD

border

#CBD1D5

text

#0D1316

muted

#7E8284

Preview Lab

Preview with #3FB5E4

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

Preview Lab → · Contrast checker → · Palette generator →