#366ECD#366ECD

#366ECD is a mid, vivid blue. Relative luminance 0.163; OKLCH L 55.1% C 0.159 H 260.3°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#366ECD
RGB	rgb(54, 110, 205)
HSL	hsl(218, 60%, 51%)
HSV	hsv(218, 74%, 80%)
CMYK	cmyk(73.7%, 46.3%, 0%, 19.6%)
CIE-LAB	lab(47.42, 14.37, -54.57)
CIE-LCH	lch(47.42, 56.43, 284.75°)
OKLab	oklab(55.13% -0.0268 -0.1565)
OKLCH	oklch(55.13% 0.159 260.3)
XYZ	xyz(18.1127, 16.3419, 59.9455)
Luminance	0.1634 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366ECD #CD9536

analogous

#36BACD #366ECD #4936CD

triadic

#366ECD #CD366E #6ECD36

tetradic

#366ECD #CD36BA #CD9536 #36CD49

square

#366ECD #CD36BA #CD9536 #36CD49

split-complementary

#366ECD #CD4936 #BACD36

monochromatic

#1B3A6D #27549E #366ECD #6791D9 #98B5E5

Accessibility & contrast

On white

4.92

#366ECD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#366ECD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366ECD

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366ECD	#FFFFFF	#000000	##FFFFFF
##366ECD	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C78D1

Deuteranopia (green-blind)

#176ACB

Tritanopia (blue-blind)

#008493

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #366ecd;
/* rgb */ color: rgb(54, 110, 205);
/* oklch */ color: oklch(55.1% 0.159 260.3);

Tailwind

colors: {
  custom: {
    50: '#8197dd',
    500: '#366ecd',
    950: '#000000',
  },
}

SCSS

$custom: #366ecd;
$custom-light: #8197dd;
$custom-dark: #000000;

JSON

{
  "hex": "#366ecd",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 205
  },
  "hsl": {
    "h": 217.748,
    "s": 60.159,
    "l": 50.784
  },
  "oklch": {
    "l": 0.5513,
    "c": 0.15879,
    "h": 260.3
  },
  "luminance": 0.16344
}

Semantic roles & 50–950 ramp

primary

#366ECD

secondary

#D1B88E

accent

#A844E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366ECD

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

Preview Lab → · Contrast checker → · Palette generator →