#366DCF#366DCF

#366DCF is a mid, vivid blue. Relative luminance 0.162; OKLCH L 55.1% C 0.163 H 260.9°. Best body text is #FFFFFF at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#366DCF
RGB	rgb(54, 109, 207)
HSL	hsl(218, 61%, 51%)
HSV	hsv(218, 74%, 81%)
CMYK	cmyk(73.9%, 47.3%, 0%, 18.8%)
CIE-LAB	lab(47.27, 15.74, -55.96)
CIE-LCH	lch(47.27, 58.13, 285.71°)
OKLab	oklab(55.05% -0.0256 -0.1606)
OKLCH	oklch(55.05% 0.163 260.9)
XYZ	xyz(18.2484, 16.2245, 61.1893)
Luminance	0.1623 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DCF #CF9836

analogous

#36BACF #366DCF #4B36CF

triadic

#366DCF #CF366D #6DCF36

tetradic

#366DCF #CF36BA #CF9836 #36CF4B

square

#366DCF #CF36BA #CF9836 #36CF4B

split-complementary

#366DCF #CF4B36 #BACF36

monochromatic

#1B3970 #2753A1 #366DCF #6791DB #99B5E7

Accessibility & contrast

On white

4.95

#366DCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#366DCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DCF

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DCF	#FFFFFF	#000000	##FFFFFF
##366DCF	1.00	4.95	4.25	4.95
#FFFFFF	4.95	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3778D3

Deuteranopia (green-blind)

#0A6ACD

Tritanopia (blue-blind)

#008494

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #366dcf;
/* rgb */ color: rgb(54, 109, 207);
/* oklch */ color: oklch(55.1% 0.163 260.9);

Tailwind

colors: {
  custom: {
    50: '#8196de',
    500: '#366dcf',
    950: '#000000',
  },
}

SCSS

$custom: #366dcf;
$custom-light: #8196de;
$custom-dark: #000000;

JSON

{
  "hex": "#366dcf",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 207
  },
  "hsl": {
    "h": 218.431,
    "s": 61.446,
    "l": 51.176
  },
  "oklch": {
    "l": 0.55053,
    "c": 0.16265,
    "h": 260.9
  },
  "luminance": 0.16227
}

Semantic roles & 50–950 ramp

primary

#366DCF

secondary

#D2BA8F

accent

#AB43E5

background

#F8F9FD

surface

#F0F1FB

border

#CBCBD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366DCF

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

Preview Lab → · Contrast checker → · Palette generator →