#3FB5F0#3FB5F0

#3FB5F0 is a light, vivid cyan. Relative luminance 0.404; OKLCH L 73.3% C 0.133 H 234.9°. Best body text is #000000 at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#3FB5F0
RGB	rgb(63, 181, 240)
HSL	hsl(200, 86%, 59%)
HSV	hsv(200, 74%, 94%)
CMYK	cmyk(73.8%, 24.6%, 0%, 5.9%)
CIE-LAB	lab(69.75, -13.64, -38.74)
CIE-LCH	lch(69.75, 41.08, 250.61°)
OKLab	oklab(73.3% -0.0767 -0.1092)
OKLCH	oklch(73.3% 0.133 234.9)
XYZ	xyz(34.2957, 40.3918, 88.4101)
Luminance	0.4040 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3FB5F0 #F07A3F

analogous

#3FF0D3 #3FB5F0 #3F5DF0

triadic

#3FB5F0 #F03FB5 #B5F03F

tetradic

#3FB5F0 #D33FF0 #F07A3F #5DF03F

square

#3FB5F0 #D33FF0 #F07A3F #5DF03F

split-complementary

#3FB5F0 #F03F5D #F0D33F

monochromatic

#0D74A8 #129BE0 #3FB5F0 #78CBF4 #B1E1F9

Accessibility & contrast

On white

2.31

#3FB5F0 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.08

#3FB5F0 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #3FB5F0

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3FB5F0	#FFFFFF	#000000	##000000
##3FB5F0	1.00	2.31	9.08	9.08
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.08	21.00	1.00	1.00
##000000	9.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#98B4F3

Deuteranopia (green-blind)

#80A3EF

Tritanopia (blue-blind)

#00C4C9

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #3fb5f0;
/* rgb */ color: rgb(63, 181, 240);
/* oklch */ color: oklch(73.3% 0.133 234.9);

Tailwind

colors: {
  custom: {
    50: '#8bcbf5',
    500: '#3fb5f0',
    950: '#000000',
  },
}

SCSS

$custom: #3fb5f0;
$custom-light: #8bcbf5;
$custom-dark: #000000;

JSON

{
  "hex": "#3fb5f0",
  "rgb": {
    "r": 63,
    "g": 181,
    "b": 240
  },
  "hsl": {
    "h": 200,
    "s": 85.507,
    "l": 59.412
  },
  "oklch": {
    "l": 0.73302,
    "c": 0.1334,
    "h": 234.9
  },
  "luminance": 0.40396
}

Semantic roles & 50–950 ramp

primary

#3FB5F0

secondary

#E8BAA3

accent

#712CFC

background

#F9FCFE

surface

#F2F8FD

border

#CCD1D5

text

#0E1317

muted

#7E8285

Preview Lab

Preview with #3FB5F0

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

Preview Lab → · Contrast checker → · Palette generator →