#3681B2#3681B2

#3681B2 is a mid, moderate cyan. Relative luminance 0.197; OKLCH L 57.8% C 0.105 H 240.8°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#3681B2
RGB	rgb(54, 129, 178)
HSL	hsl(204, 53%, 45%)
HSV	hsv(204, 70%, 70%)
CMYK	cmyk(69.7%, 27.5%, 0%, 30.2%)
CIE-LAB	lab(51.49, -6.99, -32.60)
CIE-LCH	lch(51.49, 33.34, 257.90°)
OKLab	oklab(57.84% -0.0515 -0.0919)
OKLCH	oklch(57.84% 0.105 240.8)
XYZ	xyz(17.4044, 19.6972, 44.9956)
Luminance	0.1970 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3681B2 #B26736

analogous

#36B2A5 #3681B2 #3643B2

triadic

#3681B2 #B23681 #81B236

tetradic

#3681B2 #A536B2 #B26736 #43B236

square

#3681B2 #A536B2 #B26736 #43B236

split-complementary

#3681B2 #B23643 #B2A536

monochromatic

#1A3D54 #285F83 #3681B2 #599FCD #88BADB

Accessibility & contrast

On white

4.25

#3681B2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#3681B2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3681B2

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3681B2	#FFFFFF	#000000	##000000
##3681B2	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A81B4

Deuteranopia (green-blind)

#5975B1

Tritanopia (blue-blind)

#008D92

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3681b2;
/* rgb */ color: rgb(54, 129, 178);
/* oklch */ color: oklch(57.8% 0.105 240.8);

Tailwind

colors: {
  custom: {
    50: '#7ca5c9',
    500: '#3681b2',
    950: '#000000',
  },
}

SCSS

$custom: #3681b2;
$custom-light: #7ca5c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3681b2",
  "rgb": {
    "r": 54,
    "g": 129,
    "b": 178
  },
  "hsl": {
    "h": 203.71,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.57839,
    "c": 0.10538,
    "h": 240.8
  },
  "luminance": 0.19699
}

Semantic roles & 50–950 ramp

primary

#3681B2

secondary

#C59B7F

accent

#854BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3681B2

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

Preview Lab → · Contrast checker → · Palette generator →