#3683BB#3683BB

#3683BB is a mid, moderate cyan. Relative luminance 0.206; OKLCH L 58.8% C 0.114 H 243.7°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#3683BB
RGB	rgb(54, 131, 187)
HSL	hsl(205, 55%, 47%)
HSV	hsv(205, 71%, 73%)
CMYK	cmyk(71.1%, 29.9%, 0%, 26.7%)
CIE-LAB	lab(52.51, -5.00, -36.18)
CIE-LCH	lch(52.51, 36.52, 262.13°)
OKLab	oklab(58.78% -0.0506 -0.1023)
OKLCH	oklch(58.78% 0.114 243.7)
XYZ	xyz(18.6038, 20.6027, 50.0003)
Luminance	0.2061 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3683BB #BB6E36

analogous

#36BBB1 #3683BB #3641BB

triadic

#3683BB #BB3683 #83BB36

tetradic

#3683BB #B136BB #BB6E36 #41BB36

square

#3683BB #B136BB #BB6E36 #41BB36

split-complementary

#3683BB #BB3641 #BBB136

monochromatic

#1B405C #28628C #3683BB #5EA0D0 #8DBCDE

Accessibility & contrast

On white

4.10

#3683BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#3683BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3683BB

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3683BB	#FFFFFF	#000000	##000000
##3683BB	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A84BD

Deuteranopia (green-blind)

#5778BA

Tritanopia (blue-blind)

#009197

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3683bb;
/* rgb */ color: rgb(54, 131, 187);
/* oklch */ color: oklch(58.8% 0.114 243.7);

Tailwind

colors: {
  custom: {
    50: '#7da6cf',
    500: '#3683bb',
    950: '#000000',
  },
}

SCSS

$custom: #3683bb;
$custom-light: #7da6cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3683bb",
  "rgb": {
    "r": 54,
    "g": 131,
    "b": 187
  },
  "hsl": {
    "h": 205.263,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.58783,
    "c": 0.11413,
    "h": 243.7
  },
  "luminance": 0.20605
}

Semantic roles & 50–950 ramp

primary

#3683BB

secondary

#C9A184

accent

#8849DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #3683BB

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

Preview Lab → · Contrast checker → · Palette generator →