#366BC1#366BC1

#366BC1 is a mid, vivid blue. Relative luminance 0.151; OKLCH L 53.7% C 0.146 H 259.6°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#366BC1
RGB	rgb(54, 107, 193)
HSL	hsl(217, 56%, 48%)
HSV	hsv(217, 72%, 76%)
CMYK	cmyk(72%, 44.6%, 0%, 24.3%)
CIE-LAB	lab(45.84, 11.83, -50.22)
CIE-LCH	lch(45.84, 51.59, 283.26°)
OKLab	oklab(53.67% -0.0263 -0.1437)
OKLCH	oklch(53.67% 0.146 259.6)
XYZ	xyz(16.4012, 15.1481, 52.5012)
Luminance	0.1515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BC1 #C18C36

analogous

#36B0C1 #366BC1 #4636C1

triadic

#366BC1 #C1366B #6BC136

tetradic

#366BC1 #C136B0 #C18C36 #36C146

square

#366BC1 #C136B0 #C18C36 #36C146

split-complementary

#366BC1 #C14636 #B0C136

monochromatic

#1B3661 #295091 #366BC1 #618DD3 #91AFE0

Accessibility & contrast

On white

5.21

#366BC1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#366BC1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BC1

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BC1	#FFFFFF	#000000	##FFFFFF
##366BC1	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4073C4

Deuteranopia (green-blind)

#2567BF

Tritanopia (blue-blind)

#007F8C

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366bc1;
/* rgb */ color: rgb(54, 107, 193);
/* oklch */ color: oklch(53.7% 0.146 259.6);

Tailwind

colors: {
  custom: {
    50: '#7e94d4',
    500: '#366bc1',
    950: '#000000',
  },
}

SCSS

$custom: #366bc1;
$custom-light: #7e94d4;
$custom-dark: #000000;

JSON

{
  "hex": "#366bc1",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 193
  },
  "hsl": {
    "h": 217.122,
    "s": 56.275,
    "l": 48.431
  },
  "oklch": {
    "l": 0.53672,
    "c": 0.14613,
    "h": 259.6
  },
  "luminance": 0.1515
}

Semantic roles & 50–950 ramp

primary

#366BC1

secondary

#CBB188

accent

#A648E0

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366BC1

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

Preview Lab → · Contrast checker → · Palette generator →