#366BC7#366BC7

#366BC7 is a mid, vivid blue. Relative luminance 0.154; OKLCH L 54.1% C 0.154 H 260.6°. Best body text is #FFFFFF at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#366BC7
RGB	rgb(54, 107, 199)
HSL	hsl(218, 57%, 50%)
HSV	hsv(218, 73%, 78%)
CMYK	cmyk(72.9%, 46.2%, 0%, 22%)
CIE-LAB	lab(46.21, 14.05, -53.08)
CIE-LCH	lch(46.21, 54.91, 284.82°)
OKLab	oklab(54.08% -0.0252 -0.1522)
OKLCH	oklch(54.08% 0.154 260.6)
XYZ	xyz(17.0841, 15.4213, 56.0980)
Luminance	0.1542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BC7 #C79236

analogous

#36B4C7 #366BC7 #4A36C7

triadic

#366BC7 #C7366B #6BC736

tetradic

#366BC7 #C736B4 #C79236 #36C74A

square

#366BC7 #C736B4 #C79236 #36C74A

split-complementary

#366BC7 #C74A36 #B4C736

monochromatic

#1C3767 #295197 #366BC7 #658ED5 #95B1E2

Accessibility & contrast

On white

5.14

#366BC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#366BC7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BC7

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BC7	#FFFFFF	#000000	##FFFFFF
##366BC7	1.00	5.14	4.08	5.14
#FFFFFF	5.14	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B75CA

Deuteranopia (green-blind)

#1967C5

Tritanopia (blue-blind)

#00818F

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366bc7;
/* rgb */ color: rgb(54, 107, 199);
/* oklch */ color: oklch(54.1% 0.154 260.6);

Tailwind

colors: {
  custom: {
    50: '#7f94d8',
    500: '#366bc7',
    950: '#000000',
  },
}

SCSS

$custom: #366bc7;
$custom-light: #7f94d8;
$custom-dark: #000000;

JSON

{
  "hex": "#366bc7",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 199
  },
  "hsl": {
    "h": 218.069,
    "s": 57.312,
    "l": 49.608
  },
  "oklch": {
    "l": 0.54075,
    "c": 0.15425,
    "h": 260.6
  },
  "luminance": 0.15423
}

Semantic roles & 50–950 ramp

primary

#366BC7

secondary

#CEB58B

accent

#A947E1

background

#F8F9FD

surface

#F0F1FA

border

#CBCBD3

text

#0B0D15

muted

#7C7E83

Preview Lab

Preview with #366BC7

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

Preview Lab → · Contrast checker → · Palette generator →