#366BC9#366BC9

#366BC9 is a mid, vivid blue. Relative luminance 0.155; OKLCH L 54.2% C 0.157 H 260.9°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#366BC9
RGB	rgb(54, 107, 201)
HSL	hsl(218, 58%, 50%)
HSV	hsv(218, 73%, 79%)
CMYK	cmyk(73.1%, 46.8%, 0%, 21.2%)
CIE-LAB	lab(46.33, 14.79, -54.03)
CIE-LCH	lch(46.33, 56.02, 285.31°)
OKLab	oklab(54.21% -0.0249 -0.155)
OKLCH	oklch(54.21% 0.157 260.9)
XYZ	xyz(17.3178, 15.5148, 57.3290)
Luminance	0.1552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BC9 #C99436

analogous

#36B5C9 #366BC9 #4A36C9

triadic

#366BC9 #C9366B #6BC936

tetradic

#366BC9 #C936B5 #C99436 #36C94A

square

#366BC9 #C936B5 #C99436 #36C94A

split-complementary

#366BC9 #C94A36 #B5C936

monochromatic

#1C3869 #295199 #366BC9 #668FD6 #96B2E3

Accessibility & contrast

On white

5.12

#366BC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#366BC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BC9

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BC9	#FFFFFF	#000000	##FFFFFF
##366BC9	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3975CD

Deuteranopia (green-blind)

#1467C7

Tritanopia (blue-blind)

#008190

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #366bc9;
/* rgb */ color: rgb(54, 107, 201);
/* oklch */ color: oklch(54.2% 0.157 260.9);

Tailwind

colors: {
  custom: {
    50: '#8094da',
    500: '#366bc9',
    950: '#000000',
  },
}

SCSS

$custom: #366bc9;
$custom-light: #8094da;
$custom-dark: #000000;

JSON

{
  "hex": "#366bc9",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 201
  },
  "hsl": {
    "h": 218.367,
    "s": 57.647,
    "l": 50
  },
  "oklch": {
    "l": 0.54212,
    "c": 0.15695,
    "h": 260.9
  },
  "luminance": 0.15517
}

Semantic roles & 50–950 ramp

primary

#366BC9

secondary

#CEB78C

accent

#A947E1

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366BC9

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

Preview Lab → · Contrast checker → · Palette generator →