#3F80BB#3F80BB

#3F80BB is a mid, moderate cyan. Relative luminance 0.201; OKLCH L 58.4% C 0.113 H 248.3°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#3F80BB
RGB	rgb(63, 128, 187)
HSL	hsl(209, 50%, 49%)
HSV	hsv(209, 66%, 73%)
CMYK	cmyk(66.3%, 31.6%, 0%, 26.7%)
CIE-LAB	lab(51.93, -1.81, -37.07)
CIE-LCH	lch(51.93, 37.12, 267.21°)
OKLab	oklab(58.41% -0.0417 -0.1048)
OKLCH	oklch(58.41% 0.113 248.3)
XYZ	xyz(18.7354, 20.0810, 49.8927)
Luminance	0.2008 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F80BB #BB7A3F

analogous

#3FBBB8 #3F80BB #3F42BB

triadic

#3F80BB #BB3F80 #80BB3F

tetradic

#3F80BB #B83FBB #BB7A3F #42BB3F

square

#3F80BB #B83FBB #BB7A3F #42BB3F

split-complementary

#3F80BB #BB3F42 #BBB83F

monochromatic

#20415F #30618D #3F80BB #6A9ECD #98BCDC

Accessibility & contrast

On white

4.19

#3F80BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#3F80BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F80BB

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F80BB	#FFFFFF	#000000	##000000
##3F80BB	1.00	4.19	5.02	5.02
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6682BE

Deuteranopia (green-blind)

#5576BA

Tritanopia (blue-blind)

#008E95

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3f80bb;
/* rgb */ color: rgb(63, 128, 187);
/* oklch */ color: oklch(58.4% 0.113 248.3);

Tailwind

colors: {
  custom: {
    50: '#81a4cf',
    500: '#3f80bb',
    950: '#000000',
  },
}

SCSS

$custom: #3f80bb;
$custom-light: #81a4cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f80bb",
  "rgb": {
    "r": 63,
    "g": 128,
    "b": 187
  },
  "hsl": {
    "h": 208.548,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.58409,
    "c": 0.11281,
    "h": 248.3
  },
  "luminance": 0.20083
}

Semantic roles & 50–950 ramp

primary

#3F80BB

secondary

#C8A98E

accent

#914FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3F80BB

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

Preview Lab → · Contrast checker → · Palette generator →