#3680D9#3680D9

#3680D9 is a mid, vivid cyan. Relative luminance 0.212; OKLCH L 59.8% C 0.154 H 255.0°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#3680D9
RGB	rgb(54, 128, 217)
HSL	hsl(213, 68%, 53%)
HSV	hsv(213, 75%, 85%)
CMYK	cmyk(75.1%, 41%, 0%, 14.9%)
CIE-LAB	lab(53.20, 7.60, -52.13)
CIE-LCH	lch(53.20, 52.68, 278.29°)
OKLab	oklab(59.83% -0.0399 -0.149)
OKLCH	oklch(59.83% 0.154 255)
XYZ	xyz(21.7602, 21.2299, 68.5831)
Luminance	0.2123 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3680D9 #D98F36

analogous

#36D1D9 #3680D9 #3D36D9

triadic

#3680D9 #D93680 #80D936

tetradic

#3680D9 #D936D1 #D98F36 #36D93D

square

#3680D9 #D936D1 #D98F36 #36D93D

split-complementary

#3680D9 #D93D36 #D1D936

monochromatic

#18467D #2162B0 #3680D9 #69A1E3 #9DC1EC

Accessibility & contrast

On white

4.00

#3680D9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#3680D9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3680D9

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3680D9	#FFFFFF	#000000	##000000
##3680D9	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)

#5587DD

Deuteranopia (green-blind)

#3978D7

Tritanopia (blue-blind)

#0095A2

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3680d9;
/* rgb */ color: rgb(54, 128, 217);
/* oklch */ color: oklch(59.8% 0.154 255.0);

Tailwind

colors: {
  custom: {
    50: '#83a4e5',
    500: '#3680d9',
    950: '#000000',
  },
}

SCSS

$custom: #3680d9;
$custom-light: #83a4e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3680d9",
  "rgb": {
    "r": 54,
    "g": 128,
    "b": 217
  },
  "hsl": {
    "h": 212.761,
    "s": 68.201,
    "l": 53.137
  },
  "oklch": {
    "l": 0.59832,
    "c": 0.15427,
    "h": 255
  },
  "luminance": 0.21232
}

Semantic roles & 50–950 ramp

primary

#3680D9

secondary

#D9B992

accent

#9C3DEB

background

#F8FAFE

surface

#F0F3FC

border

#CBCDD5

text

#0C0F16

muted

#7D7F84

Preview Lab

Preview with #3680D9

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

Preview Lab → · Contrast checker → · Palette generator →