#366BB9#366BB9

#366BB9 is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.1% C 0.135 H 258.1°. Best body text is #FFFFFF at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#366BB9
RGB	rgb(54, 107, 185)
HSL	hsl(216, 55%, 47%)
HSV	hsv(216, 71%, 73%)
CMYK	cmyk(70.8%, 42.2%, 0%, 27.5%)
CIE-LAB	lab(45.36, 8.88, -46.35)
CIE-LCH	lch(45.36, 47.19, 280.85°)
OKLab	oklab(53.15% -0.0278 -0.1324)
OKLCH	oklch(53.15% 0.135 258.1)
XYZ	xyz(15.5328, 14.8008, 47.9278)
Luminance	0.1480 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BB9 #B98436

analogous

#36ADB9 #366BB9 #4236B9

triadic

#366BB9 #B9366B #6BB936

tetradic

#366BB9 #B936AD #B98436 #36B942

square

#366BB9 #B936AD #B98436 #36B942

split-complementary

#366BB9 #B94236 #ADB936

monochromatic

#1A345A #28508A #366BB9 #5D8BD0 #8CADDD

Accessibility & contrast

On white

5.30

#366BB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#366BB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BB9

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BB9	#FFFFFF	#000000	##FFFFFF
##366BB9	1.00	5.30	3.96	5.30
#FFFFFF	5.30	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4672BC

Deuteranopia (green-blind)

#3066B7

Tritanopia (blue-blind)

#007D89

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366bb9;
/* rgb */ color: rgb(54, 107, 185);
/* oklch */ color: oklch(53.1% 0.135 258.1);

Tailwind

colors: {
  custom: {
    50: '#7d94ce',
    500: '#366bb9',
    950: '#000000',
  },
}

SCSS

$custom: #366bb9;
$custom-light: #7d94ce;
$custom-dark: #000000;

JSON

{
  "hex": "#366bb9",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 185
  },
  "hsl": {
    "h": 215.725,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.5315,
    "c": 0.13526,
    "h": 258.1
  },
  "luminance": 0.14802
}

Semantic roles & 50–950 ramp

primary

#366BB9

secondary

#C8AC83

accent

#A24ADE

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366BB9

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

Preview Lab → · Contrast checker → · Palette generator →