#366FD7#366FD7

#366FD7 is a mid, vivid blue. Relative luminance 0.171; OKLCH L 56.0% C 0.171 H 261.2°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#366FD7
RGB	rgb(54, 111, 215)
HSL	hsl(219, 67%, 53%)
HSV	hsv(219, 75%, 84%)
CMYK	cmyk(74.9%, 48.4%, 0%, 15.7%)
CIE-LAB	lab(48.33, 17.44, -58.81)
CIE-LCH	lch(48.33, 61.34, 286.51°)
OKLab	oklab(56.03% -0.0261 -0.1689)
OKLCH	oklch(56.03% 0.171 261.2)
XYZ	xyz(19.4671, 17.0573, 66.5432)
Luminance	0.1706 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FD7 #D79E36

analogous

#36BFD7 #366FD7 #4E36D7

triadic

#366FD7 #D7366F #6FD736

tetradic

#366FD7 #D736BF #D79E36 #36D74E

square

#366FD7 #D736BF #D79E36 #36D74E

split-complementary

#366FD7 #D74E36 #BFD736

monochromatic

#183B7A #2254AD #366FD7 #6994E1 #9CB8EB

Accessibility & contrast

On white

4.76

#366FD7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#366FD7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FD7

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FD7	#FFFFFF	#000000	##FFFFFF
##366FD7	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#347BDB

Deuteranopia (green-blind)

#006CD5

Tritanopia (blue-blind)

#008899

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #366fd7;
/* rgb */ color: rgb(54, 111, 215);
/* oklch */ color: oklch(56.0% 0.171 261.2);

Tailwind

colors: {
  custom: {
    50: '#8397e4',
    500: '#366fd7',
    950: '#000000',
  },
}

SCSS

$custom: #366fd7;
$custom-light: #8397e4;
$custom-dark: #000000;

JSON

{
  "hex": "#366fd7",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 215
  },
  "hsl": {
    "h": 218.758,
    "s": 66.805,
    "l": 52.745
  },
  "oklch": {
    "l": 0.56034,
    "c": 0.17096,
    "h": 261.2
  },
  "luminance": 0.17059
}

Semantic roles & 50–950 ramp

primary

#366FD7

secondary

#D7BF92

accent

#AD3EEA

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0D16

muted

#7D7E84

Preview Lab

Preview with #366FD7

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

Preview Lab → · Contrast checker → · Palette generator →