#3687BC#3687BC

#3687BC is a mid, moderate cyan. Relative luminance 0.217; OKLCH L 59.8% C 0.112 H 241.1°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#3687BC
RGB	rgb(54, 135, 188)
HSL	hsl(204, 55%, 47%)
HSV	hsv(204, 71%, 74%)
CMYK	cmyk(71.3%, 28.2%, 0%, 26.3%)
CIE-LAB	lab(53.75, -6.98, -34.81)
CIE-LCH	lch(53.75, 35.50, 258.67°)
OKLab	oklab(59.78% -0.0543 -0.0983)
OKLCH	oklch(59.78% 0.112 241.1)
XYZ	xyz(19.2589, 21.7409, 50.7486)
Luminance	0.2174 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3687BC #BC6B36

analogous

#36BCAE #3687BC #3644BC

triadic

#3687BC #BC3687 #87BC36

tetradic

#3687BC #AE36BC #BC6B36 #44BC36

square

#3687BC #AE36BC #BC6B36 #44BC36

split-complementary

#3687BC #BC3644 #BCAE36

monochromatic

#1B435D #28658C #3687BC #5EA4D1 #8EBFDF

Accessibility & contrast

On white

3.93

#3687BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#3687BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3687BC

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3687BC	#FFFFFF	#000000	##000000
##3687BC	1.00	3.93	5.35	5.35
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F88BE

Deuteranopia (green-blind)

#5C7BBB

Tritanopia (blue-blind)

#009499

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3687bc;
/* rgb */ color: rgb(54, 135, 188);
/* oklch */ color: oklch(59.8% 0.112 241.1);

Tailwind

colors: {
  custom: {
    50: '#7ea9d0',
    500: '#3687bc',
    950: '#000000',
  },
}

SCSS

$custom: #3687bc;
$custom-light: #7ea9d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3687bc",
  "rgb": {
    "r": 54,
    "g": 135,
    "b": 188
  },
  "hsl": {
    "h": 203.731,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.59779,
    "c": 0.11226,
    "h": 241.1
  },
  "luminance": 0.21743
}

Semantic roles & 50–950 ramp

primary

#3687BC

secondary

#C9A085

accent

#8449DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3687BC

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

Preview Lab → · Contrast checker → · Palette generator →