#3683B5#3683B5

#3683B5 is a mid, moderate cyan. Relative luminance 0.204; OKLCH L 58.5% C 0.107 H 240.7°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#3683B5
RGB	rgb(54, 131, 181)
HSL	hsl(204, 54%, 46%)
HSV	hsv(204, 70%, 71%)
CMYK	cmyk(70.2%, 27.6%, 0%, 29%)
CIE-LAB	lab(52.23, -7.10, -33.17)
CIE-LCH	lch(52.23, 33.93, 257.91°)
OKLab	oklab(58.47% -0.0525 -0.0936)
OKLCH	oklch(58.47% 0.107 240.7)
XYZ	xyz(17.9749, 20.3511, 46.6879)
Luminance	0.2035 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3683B5 #B56836

analogous

#36B5A7 #3683B5 #3643B5

triadic

#3683B5 #B53683 #83B536

tetradic

#3683B5 #A736B5 #B56836 #43B536

square

#3683B5 #A736B5 #B56836 #43B536

split-complementary

#3683B5 #B53643 #B5A736

monochromatic

#1A3F57 #286186 #3683B5 #5AA0CE #89BBDC

Accessibility & contrast

On white

4.14

#3683B5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#3683B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3683B5

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3683B5	#FFFFFF	#000000	##000000
##3683B5	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C83B7

Deuteranopia (green-blind)

#5B77B4

Tritanopia (blue-blind)

#008F94

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3683b5;
/* rgb */ color: rgb(54, 131, 181);
/* oklch */ color: oklch(58.5% 0.107 240.7);

Tailwind

colors: {
  custom: {
    50: '#7ca6cb',
    500: '#3683b5',
    950: '#000000',
  },
}

SCSS

$custom: #3683b5;
$custom-light: #7ca6cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3683b5",
  "rgb": {
    "r": 54,
    "g": 131,
    "b": 181
  },
  "hsl": {
    "h": 203.622,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.5847,
    "c": 0.10731,
    "h": 240.7
  },
  "luminance": 0.20353
}

Semantic roles & 50–950 ramp

primary

#3683B5

secondary

#C69C81

accent

#844ADD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3683B5

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

Preview Lab → · Contrast checker → · Palette generator →