#3660D3#3660D3

#3660D3 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.7% C 0.184 H 265.3°. Best body text is #FFFFFF at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#3660D3
RGB	rgb(54, 96, 211)
HSL	hsl(224, 64%, 52%)
HSV	hsv(224, 74%, 83%)
CMYK	cmyk(74.4%, 54.5%, 0%, 17.3%)
CIE-LAB	lab(44.02, 25.52, -63.50)
CIE-LCH	lch(44.02, 68.44, 291.89°)
OKLab	oklab(52.67% -0.0149 -0.183)
OKLCH	oklch(52.67% 0.184 265.3)
XYZ	xyz(17.4579, 13.8512, 63.3689)
Luminance	0.1385 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3660D3 #D3A936

analogous

#36AFD3 #3660D3 #5B36D3

triadic

#3660D3 #D33660 #60D336

tetradic

#3660D3 #D336AF #D3A936 #36D35B

square

#3660D3 #D336AF #D3A936 #36D35B

split-complementary

#3660D3 #D35B36 #AFD336

monochromatic

#1A3275 #2548A7 #3660D3 #6888DE #9AAFE9

Accessibility & contrast

On white

5.57

#3660D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#3660D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3660D3

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3660D3	#FFFFFF	#000000	##FFFFFF
##3660D3	1.00	5.57	3.77	5.57
#FFFFFF	5.57	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070D7

Deuteranopia (green-blind)

#0061D1

Tritanopia (blue-blind)

#007C90

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3660d3;
/* rgb */ color: rgb(54, 96, 211);
/* oklch */ color: oklch(52.7% 0.184 265.3);

Tailwind

colors: {
  custom: {
    50: '#838ce1',
    500: '#3660d3',
    950: '#000000',
  },
}

SCSS

$custom: #3660d3;
$custom-light: #838ce1;
$custom-dark: #000000;

JSON

{
  "hex": "#3660d3",
  "rgb": {
    "r": 54,
    "g": 96,
    "b": 211
  },
  "hsl": {
    "h": 223.949,
    "s": 64.082,
    "l": 51.961
  },
  "oklch": {
    "l": 0.52666,
    "c": 0.18363,
    "h": 265.3
  },
  "luminance": 0.13853
}

Semantic roles & 50–950 ramp

primary

#3660D3

secondary

#D5C290

accent

#BB41E7

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3660D3

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

Preview Lab → · Contrast checker → · Palette generator →