#366AB8#366AB8

#366AB8 is a mid, vivid blue. Relative luminance 0.146; OKLCH L 52.9% C 0.135 H 258.4°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#366AB8
RGB	rgb(54, 106, 184)
HSL	hsl(216, 55%, 47%)
HSV	hsv(216, 71%, 72%)
CMYK	cmyk(70.7%, 42.4%, 0%, 27.8%)
CIE-LAB	lab(45.01, 9.14, -46.32)
CIE-LCH	lch(45.01, 47.21, 281.17°)
OKLab	oklab(52.86% -0.0271 -0.1323)
OKLCH	oklch(52.86% 0.135 258.4)
XYZ	xyz(15.3240, 14.5514, 47.3392)
Luminance	0.1455 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366AB8 #B88436

analogous

#36ABB8 #366AB8 #4336B8

triadic

#366AB8 #B8366A #6AB836

tetradic

#366AB8 #B836AB #B88436 #36B843

square

#366AB8 #B836AB #B88436 #36B843

split-complementary

#366AB8 #B84336 #ABB836

monochromatic

#1A3359 #284F89 #366AB8 #5C8ACF #8BACDD

Accessibility & contrast

On white

5.37

#366AB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.91

#366AB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366AB8

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366AB8	#FFFFFF	#000000	##FFFFFF
##366AB8	1.00	5.37	3.91	5.37
#FFFFFF	5.37	1.00	21.00	1.00
#000000	3.91	21.00	1.00	21.00
##FFFFFF	5.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4571BB

Deuteranopia (green-blind)

#2F65B6

Tritanopia (blue-blind)

#007C88

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #366ab8;
/* rgb */ color: rgb(54, 106, 184);
/* oklch */ color: oklch(52.9% 0.135 258.4);

Tailwind

colors: {
  custom: {
    50: '#7d94ce',
    500: '#366ab8',
    950: '#000000',
  },
}

SCSS

$custom: #366ab8;
$custom-light: #7d94ce;
$custom-dark: #000000;

JSON

{
  "hex": "#366ab8",
  "rgb": {
    "r": 54,
    "g": 106,
    "b": 184
  },
  "hsl": {
    "h": 216,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.52862,
    "c": 0.13505,
    "h": 258.4
  },
  "luminance": 0.14553
}

Semantic roles & 50–950 ramp

primary

#366AB8

secondary

#C7AC82

accent

#A34ADE

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366AB8

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

Preview Lab → · Contrast checker → · Palette generator →