#366FCD#366FCD

#366FCD is a mid, vivid blue. Relative luminance 0.166; OKLCH L 55.3% C 0.158 H 259.9°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#366FCD
RGB	rgb(54, 111, 205)
HSL	hsl(217, 60%, 51%)
HSV	hsv(217, 74%, 80%)
CMYK	cmyk(73.7%, 45.9%, 0%, 19.6%)
CIE-LAB	lab(47.70, 13.74, -54.13)
CIE-LCH	lch(47.70, 55.84, 284.24°)
OKLab	oklab(55.35% -0.0277 -0.1552)
OKLCH	oklch(55.35% 0.158 259.9)
XYZ	xyz(18.2212, 16.5589, 59.9817)
Luminance	0.1656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FCD #CD9436

analogous

#36BACD #366FCD #4836CD

triadic

#366FCD #CD366F #6FCD36

tetradic

#366FCD #CD36BA #CD9436 #36CD48

square

#366FCD #CD36BA #CD9436 #36CD48

split-complementary

#366FCD #CD4836 #BACD36

monochromatic

#1B3A6D #27549E #366FCD #6792D9 #98B5E5

Accessibility & contrast

On white

4.87

#366FCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#366FCD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FCD

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FCD	#FFFFFF	#000000	##FFFFFF
##366FCD	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)

#3E79D1

Deuteranopia (green-blind)

#1B6BCB

Tritanopia (blue-blind)

#008594

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #366fcd;
/* rgb */ color: rgb(54, 111, 205);
/* oklch */ color: oklch(55.3% 0.158 259.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#366fcd",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 205
  },
  "hsl": {
    "h": 217.351,
    "s": 60.159,
    "l": 50.784
  },
  "oklch": {
    "l": 0.55345,
    "c": 0.15762,
    "h": 259.9
  },
  "luminance": 0.16561
}

Semantic roles & 50–950 ramp

primary

#366FCD

secondary

#D1B88E

accent

#A744E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366FCD

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

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