#3687B9#3687B9

#3687B9 is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.6% C 0.109 H 239.5°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#3687B9
RGB	rgb(54, 135, 185)
HSL	hsl(203, 55%, 47%)
HSV	hsv(203, 71%, 73%)
CMYK	cmyk(70.8%, 27%, 0%, 27.5%)
CIE-LAB	lab(53.61, -8.02, -33.31)
CIE-LCH	lch(53.61, 34.26, 256.46°)
OKLab	oklab(59.62% -0.0552 -0.0939)
OKLCH	oklch(59.62% 0.109 239.5)
XYZ	xyz(18.9388, 21.6129, 49.0631)
Luminance	0.2162 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3687B9 #B96836

analogous

#36B9AA #3687B9 #3645B9

triadic

#3687B9 #B93687 #87B936

tetradic

#3687B9 #AA36B9 #B96836 #45B936

square

#3687B9 #AA36B9 #B96836 #45B936

split-complementary

#3687B9 #B93645 #B9AA36

monochromatic

#1A425A #28648A #3687B9 #5DA4D0 #8CBEDD

Accessibility & contrast

On white

3.95

#3687B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#3687B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3687B9

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3687B9	#FFFFFF	#000000	##000000
##3687B9	1.00	3.95	5.32	5.32
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.32	21.00	1.00	1.00
##000000	5.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7087BB

Deuteranopia (green-blind)

#5E7AB8

Tritanopia (blue-blind)

#009498

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3687b9;
/* rgb */ color: rgb(54, 135, 185);
/* oklch */ color: oklch(59.6% 0.109 239.5);

Tailwind

colors: {
  custom: {
    50: '#7da9ce',
    500: '#3687b9',
    950: '#000000',
  },
}

SCSS

$custom: #3687b9;
$custom-light: #7da9ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3687b9",
  "rgb": {
    "r": 54,
    "g": 135,
    "b": 185
  },
  "hsl": {
    "h": 202.901,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.59625,
    "c": 0.10897,
    "h": 239.5
  },
  "luminance": 0.21615
}

Semantic roles & 50–950 ramp

primary

#3687B9

secondary

#C89D83

accent

#824ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3687B9

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

Preview Lab → · Contrast checker → · Palette generator →