#366CBE#366CBE

#366CBE is a mid, vivid blue. Relative luminance 0.152; OKLCH L 53.7% C 0.141 H 258.6°. Best body text is #FFFFFF at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#366CBE
RGB	rgb(54, 108, 190)
HSL	hsl(216, 56%, 48%)
HSV	hsv(216, 72%, 75%)
CMYK	cmyk(71.6%, 43.2%, 0%, 25.5%)
CIE-LAB	lab(45.94, 10.09, -48.31)
CIE-LCH	lch(45.94, 49.36, 281.80°)
OKLab	oklab(53.7% -0.0277 -0.1381)
OKLCH	oklch(53.7% 0.141 258.6)
XYZ	xyz(16.1748, 15.2254, 50.7916)
Luminance	0.1523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CBE #BE8836

analogous

#36B0BE #366CBE #4436BE

triadic

#366CBE #BE366C #6CBE36

tetradic

#366CBE #BE36B0 #BE8836 #36BE44

square

#366CBE #BE36B0 #BE8836 #36BE44

split-complementary

#366CBE #BE4436 #B0BE36

monochromatic

#1B365F #28518E #366CBE #608DD2 #8FAFDF

Accessibility & contrast

On white

5.19

#366CBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#366CBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CBE

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CBE	#FFFFFF	#000000	##FFFFFF
##366CBE	1.00	5.19	4.05	5.19
#FFFFFF	5.19	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4474C1

Deuteranopia (green-blind)

#2C67BC

Tritanopia (blue-blind)

#007F8C

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366cbe;
/* rgb */ color: rgb(54, 108, 190);
/* oklch */ color: oklch(53.7% 0.141 258.6);

Tailwind

colors: {
  custom: {
    50: '#7e95d2',
    500: '#366cbe',
    950: '#000000',
  },
}

SCSS

$custom: #366cbe;
$custom-light: #7e95d2;
$custom-dark: #000000;

JSON

{
  "hex": "#366cbe",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 190
  },
  "hsl": {
    "h": 216.176,
    "s": 55.738,
    "l": 47.843
  },
  "oklch": {
    "l": 0.53695,
    "c": 0.1409,
    "h": 258.6
  },
  "luminance": 0.15227
}

Semantic roles & 50–950 ramp

primary

#366CBE

secondary

#CAAF86

accent

#A349DF

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366CBE

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

Preview Lab → · Contrast checker → · Palette generator →