#366DC8#366DC8

#366DC8 is a mid, vivid blue. Relative luminance 0.159; OKLCH L 54.6% C 0.153 H 259.9°. Best body text is #FFFFFF at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#366DC8
RGB	rgb(54, 109, 200)
HSL	hsl(217, 57%, 50%)
HSV	hsv(217, 73%, 78%)
CMYK	cmyk(73%, 45.5%, 0%, 21.6%)
CIE-LAB	lab(46.83, 13.15, -52.66)
CIE-LCH	lch(46.83, 54.27, 284.02°)
OKLab	oklab(54.58% -0.0268 -0.1509)
OKLCH	oklch(54.58% 0.153 259.9)
XYZ	xyz(17.4115, 15.8898, 56.7818)
Luminance	0.1589 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DC8 #C89136

analogous

#36B6C8 #366DC8 #4836C8

triadic

#366DC8 #C8366D #6DC836

tetradic

#366DC8 #C836B6 #C89136 #36C848

square

#366DC8 #C836B6 #C89136 #36C848

split-complementary

#366DC8 #C84836 #B6C836

monochromatic

#1C3868 #295398 #366DC8 #6690D6 #96B3E3

Accessibility & contrast

On white

5.03

#366DC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.18

#366DC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DC8

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DC8	#FFFFFF	#000000	##FFFFFF
##366DC8	1.00	5.03	4.18	5.03
#FFFFFF	5.03	1.00	21.00	1.00
#000000	4.18	21.00	1.00	21.00
##FFFFFF	5.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E76CB

Deuteranopia (green-blind)

#1F69C6

Tritanopia (blue-blind)

#008291

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #366dc8;
/* rgb */ color: rgb(54, 109, 200);
/* oklch */ color: oklch(54.6% 0.153 259.9);

Tailwind

colors: {
  custom: {
    50: '#8096d9',
    500: '#366dc8',
    950: '#000000',
  },
}

SCSS

$custom: #366dc8;
$custom-light: #8096d9;
$custom-dark: #000000;

JSON

{
  "hex": "#366dc8",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 200
  },
  "hsl": {
    "h": 217.397,
    "s": 57.48,
    "l": 49.804
  },
  "oklch": {
    "l": 0.54575,
    "c": 0.15325,
    "h": 259.9
  },
  "luminance": 0.15892
}

Semantic roles & 50–950 ramp

primary

#366DC8

secondary

#CEB58C

accent

#A747E1

background

#F8F9FD

surface

#F0F1FA

border

#CBCBD3

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366DC8

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

Preview Lab → · Contrast checker → · Palette generator →