#3684BC#3684BC

#3684BC is a mid, moderate cyan. Relative luminance 0.209; OKLCH L 59.1% C 0.115 H 243.4°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#3684BC
RGB	rgb(54, 132, 188)
HSL	hsl(205, 55%, 47%)
HSV	hsv(205, 71%, 74%)
CMYK	cmyk(71.3%, 29.8%, 0%, 26.3%)
CIE-LAB	lab(52.86, -5.23, -36.21)
CIE-LCH	lch(52.86, 36.58, 261.77°)
OKLab	oklab(59.07% -0.0513 -0.1024)
OKLCH	oklch(59.07% 0.115 243.4)
XYZ	xyz(18.8462, 20.9155, 50.6111)
Luminance	0.2092 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3684BC #BC6E36

analogous

#36BCB1 #3684BC #3641BC

triadic

#3684BC #BC3684 #84BC36

tetradic

#3684BC #B136BC #BC6E36 #41BC36

square

#3684BC #B136BC #BC6E36 #41BC36

split-complementary

#3684BC #BC3641 #BCB136

monochromatic

#1B415D #28638C #3684BC #5EA1D1 #8EBDDF

Accessibility & contrast

On white

4.05

#3684BC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#3684BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3684BC

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3684BC	#FFFFFF	#000000	##000000
##3684BC	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A85BE

Deuteranopia (green-blind)

#5878BB

Tritanopia (blue-blind)

#009298

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3684bc;
/* rgb */ color: rgb(54, 132, 188);
/* oklch */ color: oklch(59.1% 0.115 243.4);

Tailwind

colors: {
  custom: {
    50: '#7da7d0',
    500: '#3684bc',
    950: '#000000',
  },
}

SCSS

$custom: #3684bc;
$custom-light: #7da7d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3684bc",
  "rgb": {
    "r": 54,
    "g": 132,
    "b": 188
  },
  "hsl": {
    "h": 205.075,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.59071,
    "c": 0.1145,
    "h": 243.4
  },
  "luminance": 0.20918
}

Semantic roles & 50–950 ramp

primary

#3684BC

secondary

#C9A185

accent

#8849DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3684BC

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

Preview Lab → · Contrast checker → · Palette generator →