#366AB9#366AB9

#366AB9 is a mid, vivid blue. Relative luminance 0.146; OKLCH L 52.9% C 0.136 H 258.6°. Best body text is #FFFFFF at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#366AB9
RGB	rgb(54, 106, 185)
HSL	hsl(216, 55%, 47%)
HSV	hsv(216, 71%, 73%)
CMYK	cmyk(70.8%, 42.7%, 0%, 27.5%)
CIE-LAB	lab(45.07, 9.51, -46.80)
CIE-LCH	lch(45.07, 47.76, 281.49°)
OKLab	oklab(52.93% -0.0269 -0.1337)
OKLCH	oklch(52.93% 0.136 258.6)
XYZ	xyz(15.4291, 14.5935, 47.8932)
Luminance	0.1459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366AB9 #B98536

analogous

#36ACB9 #366AB9 #4336B9

triadic

#366AB9 #B9366A #6AB936

tetradic

#366AB9 #B936AC #B98536 #36B943

square

#366AB9 #B936AC #B98536 #36B943

split-complementary

#366AB9 #B94336 #ACB936

monochromatic

#1A345A #284F8A #366AB9 #5D8AD0 #8CACDD

Accessibility & contrast

On white

5.36

#366AB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.92

#366AB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366AB9

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366AB9	#FFFFFF	#000000	##FFFFFF
##366AB9	1.00	5.36	3.92	5.36
#FFFFFF	5.36	1.00	21.00	1.00
#000000	3.92	21.00	1.00	21.00
##FFFFFF	5.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4471BC

Deuteranopia (green-blind)

#2E65B7

Tritanopia (blue-blind)

#007C88

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366ab9;
/* rgb */ color: rgb(54, 106, 185);
/* oklch */ color: oklch(52.9% 0.136 258.6);

Tailwind

colors: {
  custom: {
    50: '#7d94ce',
    500: '#366ab9',
    950: '#000000',
  },
}

SCSS

$custom: #366ab9;
$custom-light: #7d94ce;
$custom-dark: #000000;

JSON

{
  "hex": "#366ab9",
  "rgb": {
    "r": 54,
    "g": 106,
    "b": 185
  },
  "hsl": {
    "h": 216.183,
    "s": 54.812,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52927,
    "c": 0.13642,
    "h": 258.6
  },
  "luminance": 0.14595
}

Semantic roles & 50–950 ramp

primary

#366AB9

secondary

#C8AC83

accent

#A34ADE

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366AB9

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

Preview Lab → · Contrast checker → · Palette generator →