#366FC4#366FC4

#366FC4 is a mid, vivid blue. Relative luminance 0.161; OKLCH L 54.7% C 0.146 H 258.4°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#366FC4
RGB	rgb(54, 111, 196)
HSL	hsl(216, 57%, 49%)
HSV	hsv(216, 72%, 77%)
CMYK	cmyk(72.4%, 43.4%, 0%, 23.1%)
CIE-LAB	lab(47.15, 10.41, -49.84)
CIE-LCH	lch(47.15, 50.91, 281.80°)
OKLab	oklab(54.75% -0.0293 -0.1426)
OKLCH	oklch(54.75% 0.146 258.4)
XYZ	xyz(17.1659, 16.1368, 54.4239)
Luminance	0.1614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FC4 #C48B36

analogous

#36B6C4 #366FC4 #4436C4

triadic

#366FC4 #C4366F #6FC436

tetradic

#366FC4 #C436B6 #C48B36 #36C444

square

#366FC4 #C436B6 #C48B36 #36C444

split-complementary

#366FC4 #C44436 #B6C436

monochromatic

#1C3964 #295494 #366FC4 #6390D4 #93B2E1

Accessibility & contrast

On white

4.97

#366FC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#366FC4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FC4

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FC4	#FFFFFF	#000000	##FFFFFF
##366FC4	1.00	4.97	4.23	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4577C7

Deuteranopia (green-blind)

#2B6AC2

Tritanopia (blue-blind)

#008390

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #366fc4;
/* rgb */ color: rgb(54, 111, 196);
/* oklch */ color: oklch(54.7% 0.146 258.4);

Tailwind

colors: {
  custom: {
    50: '#7f97d6',
    500: '#366fc4',
    950: '#000000',
  },
}

SCSS

$custom: #366fc4;
$custom-light: #7f97d6;
$custom-dark: #000000;

JSON

{
  "hex": "#366fc4",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 196
  },
  "hsl": {
    "h": 215.915,
    "s": 56.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.54747,
    "c": 0.14554,
    "h": 258.4
  },
  "luminance": 0.16139
}

Semantic roles & 50–950 ramp

primary

#366FC4

secondary

#CCB189

accent

#A348E0

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366FC4

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

Preview Lab → · Contrast checker → · Palette generator →