#366ED1#366ED1

#366ED1 is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.4% C 0.164 H 260.8°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#366ED1
RGB	rgb(54, 110, 209)
HSL	hsl(218, 63%, 52%)
HSV	hsv(218, 74%, 82%)
CMYK	cmyk(74.2%, 47.4%, 0%, 18%)
CIE-LAB	lab(47.67, 15.85, -56.45)
CIE-LCH	lch(47.67, 58.64, 285.68°)
OKLab	oklab(55.4% -0.0262 -0.162)
OKLCH	oklch(55.4% 0.164 260.8)
XYZ	xyz(18.6017, 16.5375, 62.5209)
Luminance	0.1654 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366ED1 #D19936

analogous

#36BBD1 #366ED1 #4C36D1

triadic

#366ED1 #D1366E #6ED136

tetradic

#366ED1 #D136BB #D19936 #36D14C

square

#366ED1 #D136BB #D19936 #36D14C

split-complementary

#366ED1 #D14C36 #BBD136

monochromatic

#1A3A72 #2653A4 #366ED1 #6892DC #9AB6E8

Accessibility & contrast

On white

4.87

#366ED1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#366ED1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366ED1

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366ED1	#FFFFFF	#000000	##FFFFFF
##366ED1	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3879D5

Deuteranopia (green-blind)

#086ACF

Tritanopia (blue-blind)

#008595

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #366ed1;
/* rgb */ color: rgb(54, 110, 209);
/* oklch */ color: oklch(55.4% 0.164 260.8);

Tailwind

colors: {
  custom: {
    50: '#8196e0',
    500: '#366ed1',
    950: '#000000',
  },
}

SCSS

$custom: #366ed1;
$custom-light: #8196e0;
$custom-dark: #000000;

JSON

{
  "hex": "#366ed1",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 209
  },
  "hsl": {
    "h": 218.323,
    "s": 62.753,
    "l": 51.569
  },
  "oklch": {
    "l": 0.55404,
    "c": 0.16414,
    "h": 260.8
  },
  "luminance": 0.1654
}

Semantic roles & 50–950 ramp

primary

#366ED1

secondary

#D3BB8F

accent

#AB42E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366ED1

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

Preview Lab → · Contrast checker → · Palette generator →