#366ED0#366ED0

#366ED0 is a mid, vivid blue. Relative luminance 0.165; OKLCH L 55.3% C 0.163 H 260.7°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#366ED0
RGB	rgb(54, 110, 208)
HSL	hsl(218, 62%, 51%)
HSV	hsv(218, 74%, 82%)
CMYK	cmyk(74%, 47.1%, 0%, 18.4%)
CIE-LAB	lab(47.61, 15.48, -55.99)
CIE-LCH	lch(47.61, 58.09, 285.45°)
OKLab	oklab(55.34% -0.0263 -0.1607)
OKLCH	oklch(55.34% 0.163 260.7)
XYZ	xyz(18.4783, 16.4881, 61.8709)
Luminance	0.1649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366ED0 #D09836

analogous

#36BBD0 #366ED0 #4B36D0

triadic

#366ED0 #D0366E #6ED036

tetradic

#366ED0 #D036BB #D09836 #36D04B

square

#366ED0 #D036BB #D09836 #36D04B

split-complementary

#366ED0 #D04B36 #BBD036

monochromatic

#1A3A71 #2653A3 #366ED0 #6892DC #99B6E7

Accessibility & contrast

On white

4.89

#366ED0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.30

#366ED0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366ED0

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366ED0	#FFFFFF	#000000	##FFFFFF
##366ED0	1.00	4.89	4.30	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.30	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3978D4

Deuteranopia (green-blind)

#0D6ACE

Tritanopia (blue-blind)

#008595

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #366ed0;
/* rgb */ color: rgb(54, 110, 208);
/* oklch */ color: oklch(55.3% 0.163 260.7);

Tailwind

colors: {
  custom: {
    50: '#8197df',
    500: '#366ed0',
    950: '#000000',
  },
}

SCSS

$custom: #366ed0;
$custom-light: #8197df;
$custom-dark: #000000;

JSON

{
  "hex": "#366ed0",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 208
  },
  "hsl": {
    "h": 218.182,
    "s": 62.097,
    "l": 51.373
  },
  "oklch": {
    "l": 0.55335,
    "c": 0.1628,
    "h": 260.7
  },
  "luminance": 0.1649
}

Semantic roles & 50–950 ramp

primary

#366ED0

secondary

#D3BA8F

accent

#AA43E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366ED0

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

Preview Lab → · Contrast checker → · Palette generator →