#3681CC#3681CC

#3681CC is a mid, vivid cyan. Relative luminance 0.208; OKLCH L 59.3% C 0.137 H 251.3°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#3681CC
RGB	rgb(54, 129, 204)
HSL	hsl(210, 60%, 51%)
HSV	hsv(210, 74%, 80%)
CMYK	cmyk(73.5%, 36.8%, 0%, 20%)
CIE-LAB	lab(52.78, 2.26, -45.45)
CIE-LCH	lch(52.78, 45.51, 272.85°)
OKLab	oklab(59.27% -0.0439 -0.1294)
OKLCH	oklch(59.27% 0.137 251.3)
XYZ	xyz(20.2666, 20.8421, 60.0699)
Luminance	0.2084 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3681CC #CC8136

analogous

#36CCCC #3681CC #3636CC

triadic

#3681CC #CC3681 #81CC36

tetradic

#3681CC #CC36CC #CC8136 #36CC36

square

#3681CC #CC36CC #CC8136 #36CC36

split-complementary

#3681CC #CC3636 #CCCC36

monochromatic

#1B446C #28629D #3681CC #67A0D8 #98BEE5

Accessibility & contrast

On white

4.06

#3681CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#3681CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3681CC

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3681CC	#FFFFFF	#000000	##000000
##3681CC	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E86CF

Deuteranopia (green-blind)

#4878CB

Tritanopia (blue-blind)

#00939D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3681cc;
/* rgb */ color: rgb(54, 129, 204);
/* oklch */ color: oklch(59.3% 0.137 251.3);

Tailwind

colors: {
  custom: {
    50: '#80a5dc',
    500: '#3681cc',
    950: '#000000',
  },
}

SCSS

$custom: #3681cc;
$custom-light: #80a5dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3681cc",
  "rgb": {
    "r": 54,
    "g": 129,
    "b": 204
  },
  "hsl": {
    "h": 210,
    "s": 59.524,
    "l": 50.588
  },
  "oklch": {
    "l": 0.5927,
    "c": 0.13664,
    "h": 251.3
  },
  "luminance": 0.20844
}

Semantic roles & 50–950 ramp

primary

#3681CC

secondary

#D0AF8E

accent

#9445E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #3681CC

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

Preview Lab → · Contrast checker → · Palette generator →