#366BBC#366BBC

#366BBC is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.3% C 0.139 H 258.7°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#366BBC
RGB	rgb(54, 107, 188)
HSL	hsl(216, 55%, 47%)
HSV	hsv(216, 71%, 74%)
CMYK	cmyk(71.3%, 43.1%, 0%, 26.3%)
CIE-LAB	lab(45.54, 9.98, -47.80)
CIE-LCH	lch(45.54, 48.84, 281.80°)
OKLab	oklab(53.34% -0.0272 -0.1366)
OKLCH	oklch(53.34% 0.139 258.7)
XYZ	xyz(15.8528, 14.9288, 49.6133)
Luminance	0.1493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BBC #BC8736

analogous

#36AEBC #366BBC #4436BC

triadic

#366BBC #BC366B #6BBC36

tetradic

#366BBC #BC36AE #BC8736 #36BC44

square

#366BBC #BC36AE #BC8736 #36BC44

split-complementary

#366BBC #BC4436 #AEBC36

monochromatic

#1B355D #28508C #366BBC #5E8CD1 #8EAEDF

Accessibility & contrast

On white

5.27

#366BBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#366BBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BBC

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BBC	#FFFFFF	#000000	##FFFFFF
##366BBC	1.00	5.27	3.99	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4472BF

Deuteranopia (green-blind)

#2C66BA

Tritanopia (blue-blind)

#007E8A

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366bbc;
/* rgb */ color: rgb(54, 107, 188);
/* oklch */ color: oklch(53.3% 0.139 258.7);

Tailwind

colors: {
  custom: {
    50: '#7d94d1',
    500: '#366bbc',
    950: '#000000',
  },
}

SCSS

$custom: #366bbc;
$custom-light: #7d94d1;
$custom-dark: #000000;

JSON

{
  "hex": "#366bbc",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 188
  },
  "hsl": {
    "h": 216.269,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.53343,
    "c": 0.13933,
    "h": 258.7
  },
  "luminance": 0.14931
}

Semantic roles & 50–950 ramp

primary

#366BBC

secondary

#C9AE85

accent

#A449DF

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366BBC

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

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