#3681B4#3681B4

#3681B4 is a mid, moderate cyan. Relative luminance 0.198; OKLCH L 57.9% C 0.108 H 241.8°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#3681B4
RGB	rgb(54, 129, 180)
HSL	hsl(204, 54%, 46%)
HSV	hsv(204, 70%, 71%)
CMYK	cmyk(70%, 28.3%, 0%, 29.4%)
CIE-LAB	lab(51.59, -6.29, -33.61)
CIE-LCH	lch(51.59, 34.19, 259.40°)
OKLab	oklab(57.94% -0.0508 -0.0949)
OKLCH	oklch(57.94% 0.108 241.8)
XYZ	xyz(17.6066, 19.7781, 46.0608)
Luminance	0.1978 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3681B4 #B46936

analogous

#36B4A8 #3681B4 #3642B4

triadic

#3681B4 #B43681 #81B436

tetradic

#3681B4 #A836B4 #B46936 #42B436

square

#3681B4 #A836B4 #B46936 #42B436

split-complementary

#3681B4 #B43642 #B4A836

monochromatic

#1A3E56 #285F85 #3681B4 #5A9FCD #89BADC

Accessibility & contrast

On white

4.24

#3681B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#3681B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3681B4

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3681B4	#FFFFFF	#000000	##000000
##3681B4	1.00	4.24	4.96	4.96
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A82B6

Deuteranopia (green-blind)

#5876B3

Tritanopia (blue-blind)

#008E93

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3681b4;
/* rgb */ color: rgb(54, 129, 180);
/* oklch */ color: oklch(57.9% 0.108 241.8);

Tailwind

colors: {
  custom: {
    50: '#7ca5ca',
    500: '#3681b4',
    950: '#000000',
  },
}

SCSS

$custom: #3681b4;
$custom-light: #7ca5ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3681b4",
  "rgb": {
    "r": 54,
    "g": 129,
    "b": 180
  },
  "hsl": {
    "h": 204.286,
    "s": 53.846,
    "l": 45.882
  },
  "oklch": {
    "l": 0.57943,
    "c": 0.10762,
    "h": 241.8
  },
  "luminance": 0.1978
}

Semantic roles & 50–950 ramp

primary

#3681B4

secondary

#C69C80

accent

#864BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3681B4

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

Preview Lab → · Contrast checker → · Palette generator →