#3F80BC#3F80BC

#3F80BC is a mid, moderate cyan. Relative luminance 0.201; OKLCH L 58.5% C 0.114 H 248.7°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#3F80BC
RGB	rgb(63, 128, 188)
HSL	hsl(209, 50%, 49%)
HSV	hsv(209, 66%, 74%)
CMYK	cmyk(66.5%, 31.9%, 0%, 26.3%)
CIE-LAB	lab(51.98, -1.46, -37.57)
CIE-LCH	lch(51.98, 37.60, 267.77°)
OKLab	oklab(58.46% -0.0414 -0.1063)
OKLCH	oklch(58.46% 0.114 248.7)
XYZ	xyz(18.8428, 20.1240, 50.4585)
Luminance	0.2013 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F80BC #BC7B3F

analogous

#3FBCBA #3F80BC #3F42BC

triadic

#3F80BC #BC3F80 #80BC3F

tetradic

#3F80BC #BA3FBC #BC7B3F #42BC3F

square

#3F80BC #BA3FBC #BC7B3F #42BC3F

split-complementary

#3F80BC #BC3F42 #BCBA3F

monochromatic

#204260 #30618E #3F80BC #6B9ECD #99BCDD

Accessibility & contrast

On white

4.18

#3F80BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#3F80BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F80BC

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F80BC	#FFFFFF	#000000	##000000
##3F80BC	1.00	4.18	5.03	5.03
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6683BF

Deuteranopia (green-blind)

#5477BB

Tritanopia (blue-blind)

#008E95

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3f80bc;
/* rgb */ color: rgb(63, 128, 188);
/* oklch */ color: oklch(58.5% 0.114 248.7);

Tailwind

colors: {
  custom: {
    50: '#81a4d0',
    500: '#3f80bc',
    950: '#000000',
  },
}

SCSS

$custom: #3f80bc;
$custom-light: #81a4d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f80bc",
  "rgb": {
    "r": 63,
    "g": 128,
    "b": 188
  },
  "hsl": {
    "h": 208.8,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.58463,
    "c": 0.11406,
    "h": 248.7
  },
  "luminance": 0.20126
}

Semantic roles & 50–950 ramp

primary

#3F80BC

secondary

#C9AA8E

accent

#914ED9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3F80BC

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

Preview Lab → · Contrast checker → · Palette generator →