#366DBD#366DBD

#366DBD is a mid, vivid blue. Relative luminance 0.154; OKLCH L 53.9% C 0.138 H 258.0°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#366DBD
RGB	rgb(54, 109, 189)
HSL	hsl(216, 56%, 48%)
HSV	hsv(216, 71%, 74%)
CMYK	cmyk(71.4%, 42.3%, 0%, 25.9%)
CIE-LAB	lab(46.17, 9.09, -47.37)
CIE-LCH	lch(46.17, 48.24, 280.86°)
OKLab	oklab(53.85% -0.0289 -0.1353)
OKLCH	oklch(53.85% 0.138 258)
XYZ	xyz(16.1719, 15.3939, 50.2533)
Luminance	0.1540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DBD #BD8636

analogous

#36B0BD #366DBD #4336BD

triadic

#366DBD #BD366D #6DBD36

tetradic

#366DBD #BD36B0 #BD8636 #36BD43

square

#366DBD #BD36B0 #BD8636 #36BD43

split-complementary

#366DBD #BD4336 #B0BD36

monochromatic

#1B365E #28528D #366DBD #5F8ED1 #8FAFDF

Accessibility & contrast

On white

5.15

#366DBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#366DBD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DBD

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DBD	#FFFFFF	#000000	##FFFFFF
##366DBD	1.00	5.15	4.08	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4774C0

Deuteranopia (green-blind)

#3068BB

Tritanopia (blue-blind)

#00808C

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366dbd;
/* rgb */ color: rgb(54, 109, 189);
/* oklch */ color: oklch(53.9% 0.138 258.0);

Tailwind

colors: {
  custom: {
    50: '#7d96d1',
    500: '#366dbd',
    950: '#000000',
  },
}

SCSS

$custom: #366dbd;
$custom-light: #7d96d1;
$custom-dark: #000000;

JSON

{
  "hex": "#366dbd",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 189
  },
  "hsl": {
    "h": 215.556,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.53852,
    "c": 0.1384,
    "h": 258
  },
  "luminance": 0.15396
}

Semantic roles & 50–950 ramp

primary

#366DBD

secondary

#C9AE85

accent

#A249DF

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366DBD

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

Preview Lab → · Contrast checker → · Palette generator →