#366CCF#366CCF

#366CCF is a mid, vivid blue. Relative luminance 0.160; OKLCH L 54.8% C 0.164 H 261.3°. Best body text is #FFFFFF at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#366CCF
RGB	rgb(54, 108, 207)
HSL	hsl(219, 61%, 51%)
HSV	hsv(219, 74%, 81%)
CMYK	cmyk(73.9%, 47.8%, 0%, 18.8%)
CIE-LAB	lab(46.99, 16.37, -56.41)
CIE-LCH	lch(46.99, 58.74, 286.19°)
OKLab	oklab(54.84% -0.0248 -0.1619)
OKLCH	oklch(54.84% 0.164 261.3)
XYZ	xyz(18.1423, 16.0124, 61.1539)
Luminance	0.1601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CCF #CF9936

analogous

#36B8CF #366CCF #4C36CF

triadic

#366CCF #CF366C #6CCF36

tetradic

#366CCF #CF36B8 #CF9936 #36CF4C

square

#366CCF #CF36B8 #CF9936 #36CF4C

split-complementary

#366CCF #CF4C36 #B8CF36

monochromatic

#1B3970 #2752A1 #366CCF #6790DB #99B4E7

Accessibility & contrast

On white

5.00

#366CCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.20

#366CCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CCF

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CCF	#FFFFFF	#000000	##FFFFFF
##366CCF	1.00	5.00	4.20	5.00
#FFFFFF	5.00	1.00	21.00	1.00
#000000	4.20	21.00	1.00	21.00
##FFFFFF	5.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3577D3

Deuteranopia (green-blind)

#0169CD

Tritanopia (blue-blind)

#008393

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #366ccf;
/* rgb */ color: rgb(54, 108, 207);
/* oklch */ color: oklch(54.8% 0.164 261.3);

Tailwind

colors: {
  custom: {
    50: '#8195de',
    500: '#366ccf',
    950: '#000000',
  },
}

SCSS

$custom: #366ccf;
$custom-light: #8195de;
$custom-dark: #000000;

JSON

{
  "hex": "#366ccf",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 207
  },
  "hsl": {
    "h": 218.824,
    "s": 61.446,
    "l": 51.176
  },
  "oklch": {
    "l": 0.54841,
    "c": 0.16383,
    "h": 261.3
  },
  "luminance": 0.16014
}

Semantic roles & 50–950 ramp

primary

#366CCF

secondary

#D2BA8F

accent

#AC43E5

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366CCF

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

Preview Lab → · Contrast checker → · Palette generator →