#366BC0#366BC0

#366BC0 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 53.6% C 0.145 H 259.5°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#366BC0
RGB	rgb(54, 107, 192)
HSL	hsl(217, 56%, 48%)
HSV	hsv(217, 72%, 75%)
CMYK	cmyk(71.9%, 44.3%, 0%, 24.7%)
CIE-LAB	lab(45.78, 11.46, -49.74)
CIE-LCH	lch(45.78, 51.04, 282.98°)
OKLab	oklab(53.61% -0.0264 -0.1423)
OKLCH	oklch(53.61% 0.145 259.5)
XYZ	xyz(16.2900, 15.1037, 51.9157)
Luminance	0.1510 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BC0 #C08B36

analogous

#36B0C0 #366BC0 #4636C0

triadic

#366BC0 #C0366B #6BC036

tetradic

#366BC0 #C036B0 #C08B36 #36C046

square

#366BC0 #C036B0 #C08B36 #36C046

split-complementary

#366BC0 #C04636 #B0C036

monochromatic

#1B3660 #295090 #366BC0 #618CD2 #90AFE0

Accessibility & contrast

On white

5.22

#366BC0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#366BC0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BC0

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BC0	#FFFFFF	#000000	##FFFFFF
##366BC0	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4173C3

Deuteranopia (green-blind)

#2766BE

Tritanopia (blue-blind)

#007F8C

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366bc0;
/* rgb */ color: rgb(54, 107, 192);
/* oklch */ color: oklch(53.6% 0.145 259.5);

Tailwind

colors: {
  custom: {
    50: '#7e94d3',
    500: '#366bc0',
    950: '#000000',
  },
}

SCSS

$custom: #366bc0;
$custom-light: #7e94d3;
$custom-dark: #000000;

JSON

{
  "hex": "#366bc0",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 192
  },
  "hsl": {
    "h": 216.957,
    "s": 56.098,
    "l": 48.235
  },
  "oklch": {
    "l": 0.53605,
    "c": 0.14477,
    "h": 259.5
  },
  "luminance": 0.15105
}

Semantic roles & 50–950 ramp

primary

#366BC0

secondary

#CBB187

accent

#A548DF

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366BC0

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

Preview Lab → · Contrast checker → · Palette generator →