#3687B5#3687B5

#3687B5 is a mid, moderate cyan. Relative luminance 0.214; OKLCH L 59.4% C 0.105 H 237.3°. Best body text is #000000 at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#3687B5
RGB	rgb(54, 135, 181)
HSL	hsl(202, 54%, 46%)
HSV	hsv(202, 70%, 71%)
CMYK	cmyk(70.2%, 25.4%, 0%, 29%)
CIE-LAB	lab(53.43, -9.40, -31.30)
CIE-LCH	lch(53.43, 32.68, 253.28°)
OKLab	oklab(59.42% -0.0566 -0.0881)
OKLCH	oklch(59.42% 0.105 237.3)
XYZ	xyz(18.5225, 21.4464, 46.8705)
Luminance	0.2145 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3687B5 #B56436

analogous

#36B5A3 #3687B5 #3647B5

triadic

#3687B5 #B53687 #87B536

tetradic

#3687B5 #A336B5 #B56436 #47B536

square

#3687B5 #A336B5 #B56436 #47B536

split-complementary

#3687B5 #B53647 #B5A336

monochromatic

#1A4157 #286486 #3687B5 #5AA4CE #89BEDC

Accessibility & contrast

On white

3.97

#3687B5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.29

#3687B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3687B5

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3687B5	#FFFFFF	#000000	##000000
##3687B5	1.00	3.97	5.29	5.29
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.29	21.00	1.00	1.00
##000000	5.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7187B7

Deuteranopia (green-blind)

#607AB4

Tritanopia (blue-blind)

#009397

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3687b5;
/* rgb */ color: rgb(54, 135, 181);
/* oklch */ color: oklch(59.4% 0.105 237.3);

Tailwind

colors: {
  custom: {
    50: '#7ca9cb',
    500: '#3687b5',
    950: '#000000',
  },
}

SCSS

$custom: #3687b5;
$custom-light: #7ca9cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3687b5",
  "rgb": {
    "r": 54,
    "g": 135,
    "b": 181
  },
  "hsl": {
    "h": 201.732,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.59424,
    "c": 0.10472,
    "h": 237.3
  },
  "luminance": 0.21448
}

Semantic roles & 50–950 ramp

primary

#3687B5

secondary

#C69A81

accent

#804ADD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3687B5

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

Preview Lab → · Contrast checker → · Palette generator →