#3687B7#3687B7

#3687B7 is a mid, moderate cyan. Relative luminance 0.215; OKLCH L 59.5% C 0.107 H 238.4°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3687B7
RGB	rgb(54, 135, 183)
HSL	hsl(202, 54%, 46%)
HSV	hsv(202, 70%, 72%)
CMYK	cmyk(70.5%, 26.2%, 0%, 28.2%)
CIE-LAB	lab(53.52, -8.71, -32.30)
CIE-LCH	lch(53.52, 33.46, 254.91°)
OKLab	oklab(59.52% -0.0559 -0.091)
OKLCH	oklch(59.52% 0.107 238.4)
XYZ	xyz(18.7292, 21.5290, 47.9590)
Luminance	0.2153 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3687B7 #B76636

analogous

#36B7A7 #3687B7 #3647B7

triadic

#3687B7 #B73687 #87B736

tetradic

#3687B7 #A736B7 #B76636 #47B736

square

#3687B7 #A736B7 #B76636 #47B736

split-complementary

#3687B7 #B73647 #B7A736

monochromatic

#1A4158 #286488 #3687B7 #5BA4CF #8BBEDD

Accessibility & contrast

On white

3.96

#3687B7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#3687B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3687B7

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3687B7	#FFFFFF	#000000	##000000
##3687B7	1.00	3.96	5.31	5.31
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7187B9

Deuteranopia (green-blind)

#5F7AB6

Tritanopia (blue-blind)

#009397

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3687b7;
/* rgb */ color: rgb(54, 135, 183);
/* oklch */ color: oklch(59.5% 0.107 238.4);

Tailwind

colors: {
  custom: {
    50: '#7da9cc',
    500: '#3687b7',
    950: '#000000',
  },
}

SCSS

$custom: #3687b7;
$custom-light: #7da9cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3687b7",
  "rgb": {
    "r": 54,
    "g": 135,
    "b": 183
  },
  "hsl": {
    "h": 202.326,
    "s": 54.43,
    "l": 46.471
  },
  "oklch": {
    "l": 0.59524,
    "c": 0.10682,
    "h": 238.4
  },
  "luminance": 0.21531
}

Semantic roles & 50–950 ramp

primary

#3687B7

secondary

#C79C82

accent

#814ADE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3687B7

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

Preview Lab → · Contrast checker → · Palette generator →