#366EC1#366EC1

#366EC1 is a mid, vivid blue. Relative luminance 0.158; OKLCH L 54.3% C 0.143 H 258.3°. Best body text is #FFFFFF at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#366EC1
RGB	rgb(54, 110, 193)
HSL	hsl(216, 56%, 48%)
HSV	hsv(216, 72%, 76%)
CMYK	cmyk(72%, 43%, 0%, 24.3%)
CIE-LAB	lab(46.69, 9.94, -48.85)
CIE-LCH	lch(46.69, 49.85, 281.50°)
OKLab	oklab(54.33% -0.029 -0.1397)
OKLCH	oklch(54.33% 0.143 258.3)
XYZ	xyz(16.7194, 15.7846, 52.6073)
Luminance	0.1579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EC1 #C18936

analogous

#36B3C1 #366EC1 #4336C1

triadic

#366EC1 #C1366E #6EC136

tetradic

#366EC1 #C136B3 #C18936 #36C143

square

#366EC1 #C136B3 #C18936 #36C143

split-complementary

#366EC1 #C14336 #B3C136

monochromatic

#1B3761 #295391 #366EC1 #618FD3 #91B1E0

Accessibility & contrast

On white

5.05

#366EC1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.16

#366EC1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EC1

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EC1	#FFFFFF	#000000	##FFFFFF
##366EC1	1.00	5.05	4.16	5.05
#FFFFFF	5.05	1.00	21.00	1.00
#000000	4.16	21.00	1.00	21.00
##FFFFFF	5.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4676C4

Deuteranopia (green-blind)

#2D69BF

Tritanopia (blue-blind)

#00818E

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #366ec1;
/* rgb */ color: rgb(54, 110, 193);
/* oklch */ color: oklch(54.3% 0.143 258.3);

Tailwind

colors: {
  custom: {
    50: '#7e97d4',
    500: '#366ec1',
    950: '#000000',
  },
}

SCSS

$custom: #366ec1;
$custom-light: #7e97d4;
$custom-dark: #000000;

JSON

{
  "hex": "#366ec1",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 193
  },
  "hsl": {
    "h": 215.827,
    "s": 56.275,
    "l": 48.431
  },
  "oklch": {
    "l": 0.54332,
    "c": 0.14265,
    "h": 258.3
  },
  "luminance": 0.15786
}

Semantic roles & 50–950 ramp

primary

#366EC1

secondary

#CBB088

accent

#A348E0

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366EC1

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

Preview Lab → · Contrast checker → · Palette generator →