#3687B0#3687B0

#3687B0 is a mid, moderate cyan. Relative luminance 0.212; OKLCH L 59.2% C 0.100 H 234.2°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#3687B0
RGB	rgb(54, 135, 176)
HSL	hsl(200, 53%, 45%)
HSV	hsv(200, 69%, 69%)
CMYK	cmyk(69.3%, 23.3%, 0%, 31%)
CIE-LAB	lab(53.22, -11.12, -28.77)
CIE-LCH	lch(53.22, 30.84, 248.87°)
OKLab	oklab(59.18% -0.0583 -0.0808)
OKLCH	oklch(59.18% 0.1 234.2)
XYZ	xyz(18.0187, 21.2448, 44.2169)
Luminance	0.2125 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3687B0 #B05F36

analogous

#36B09C #3687B0 #364AB0

triadic

#3687B0 #B03687 #87B036

tetradic

#3687B0 #9C36B0 #B05F36 #4AB036

square

#3687B0 #9C36B0 #B05F36 #4AB036

split-complementary

#3687B0 #B0364A #B09C36

monochromatic

#193F52 #286381 #3687B0 #58A5CC #86BEDA

Accessibility & contrast

On white

4.00

#3687B0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#3687B0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3687B0

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3687B0	#FFFFFF	#000000	##000000
##3687B0	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7386B2

Deuteranopia (green-blind)

#627AAF

Tritanopia (blue-blind)

#009295

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3687b0;
/* rgb */ color: rgb(54, 135, 176);
/* oklch */ color: oklch(59.2% 0.100 234.2);

Tailwind

colors: {
  custom: {
    50: '#7caac7',
    500: '#3687b0',
    950: '#000000',
  },
}

SCSS

$custom: #3687b0;
$custom-light: #7caac7;
$custom-dark: #000000;

JSON

{
  "hex": "#3687b0",
  "rgb": {
    "r": 54,
    "g": 135,
    "b": 176
  },
  "hsl": {
    "h": 200.164,
    "s": 53.043,
    "l": 45.098
  },
  "oklch": {
    "l": 0.59178,
    "c": 0.09966,
    "h": 234.2
  },
  "luminance": 0.21247
}

Semantic roles & 50–950 ramp

primary

#3687B0

secondary

#C4957E

accent

#7C4BDC

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3687B0

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

Preview Lab → · Contrast checker → · Palette generator →