#366DCD#366DCD

#366DCD is a mid, vivid blue. Relative luminance 0.161; OKLCH L 54.9% C 0.160 H 260.7°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#366DCD
RGB	rgb(54, 109, 205)
HSL	hsl(218, 60%, 51%)
HSV	hsv(218, 74%, 80%)
CMYK	cmyk(73.7%, 46.8%, 0%, 19.6%)
CIE-LAB	lab(47.14, 15.00, -55.02)
CIE-LCH	lch(47.14, 57.03, 285.25°)
OKLab	oklab(54.92% -0.026 -0.1578)
OKLCH	oklch(54.92% 0.16 260.7)
XYZ	xyz(18.0054, 16.1273, 59.9097)
Luminance	0.1613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DCD #CD9636

analogous

#36B8CD #366DCD #4A36CD

triadic

#366DCD #CD366D #6DCD36

tetradic

#366DCD #CD36B8 #CD9636 #36CD4A

square

#366DCD #CD36B8 #CD9636 #36CD4A

split-complementary

#366DCD #CD4A36 #B8CD36

monochromatic

#1B396D #27539E #366DCD #6791D9 #98B4E5

Accessibility & contrast

On white

4.97

#366DCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#366DCD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DCD

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DCD	#FFFFFF	#000000	##FFFFFF
##366DCD	1.00	4.97	4.23	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3977D1

Deuteranopia (green-blind)

#1269CB

Tritanopia (blue-blind)

#008493

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #366dcd;
/* rgb */ color: rgb(54, 109, 205);
/* oklch */ color: oklch(54.9% 0.160 260.7);

Tailwind

colors: {
  custom: {
    50: '#8196dd',
    500: '#366dcd',
    950: '#000000',
  },
}

SCSS

$custom: #366dcd;
$custom-light: #8196dd;
$custom-dark: #000000;

JSON

{
  "hex": "#366dcd",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 205
  },
  "hsl": {
    "h": 218.146,
    "s": 60.159,
    "l": 50.784
  },
  "oklch": {
    "l": 0.54915,
    "c": 0.15997,
    "h": 260.7
  },
  "luminance": 0.16129
}

Semantic roles & 50–950 ramp

primary

#366DCD

secondary

#D1B98E

accent

#A944E3

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366DCD

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

Preview Lab → · Contrast checker → · Palette generator →