#366FC7#366FC7

#366FC7 is a mid, vivid blue. Relative luminance 0.163; OKLCH L 54.9% C 0.150 H 258.9°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#366FC7
RGB	rgb(54, 111, 199)
HSL	hsl(216, 57%, 50%)
HSV	hsv(216, 73%, 78%)
CMYK	cmyk(72.9%, 44.2%, 0%, 22%)
CIE-LAB	lab(47.33, 11.52, -51.27)
CIE-LCH	lch(47.33, 52.55, 282.66°)
OKLab	oklab(54.94% -0.0287 -0.1468)
OKLCH	oklch(54.94% 0.15 258.9)
XYZ	xyz(17.5108, 16.2748, 56.2402)
Luminance	0.1628 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FC7 #C78E36

analogous

#36B7C7 #366FC7 #4636C7

triadic

#366FC7 #C7366F #6FC736

tetradic

#366FC7 #C736B7 #C78E36 #36C746

square

#366FC7 #C736B7 #C78E36 #36C746

split-complementary

#366FC7 #C74636 #B7C736

monochromatic

#1C3967 #295497 #366FC7 #6591D5 #95B3E2

Accessibility & contrast

On white

4.93

#366FC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#366FC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FC7

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FC7	#FFFFFF	#000000	##FFFFFF
##366FC7	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4377CA

Deuteranopia (green-blind)

#276AC5

Tritanopia (blue-blind)

#008491

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #366fc7;
/* rgb */ color: rgb(54, 111, 199);
/* oklch */ color: oklch(54.9% 0.150 258.9);

Tailwind

colors: {
  custom: {
    50: '#7f97d8',
    500: '#366fc7',
    950: '#000000',
  },
}

SCSS

$custom: #366fc7;
$custom-light: #7f97d8;
$custom-dark: #000000;

JSON

{
  "hex": "#366fc7",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 199
  },
  "hsl": {
    "h": 216.414,
    "s": 57.312,
    "l": 49.608
  },
  "oklch": {
    "l": 0.54944,
    "c": 0.14958,
    "h": 258.9
  },
  "luminance": 0.16277
}

Semantic roles & 50–950 ramp

primary

#366FC7

secondary

#CEB38B

accent

#A447E1

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366FC7

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

Preview Lab → · Contrast checker → · Palette generator →