#366ECC#366ECC

#366ECC is a mid, vivid blue. Relative luminance 0.163; OKLCH L 55.1% C 0.157 H 260.1°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#366ECC
RGB	rgb(54, 110, 204)
HSL	hsl(218, 60%, 51%)
HSV	hsv(218, 74%, 80%)
CMYK	cmyk(73.5%, 46.1%, 0%, 20%)
CIE-LAB	lab(47.36, 14.00, -54.10)
CIE-LCH	lch(47.36, 55.88, 284.51°)
OKLab	oklab(55.06% -0.027 -0.1551)
OKLCH	oklch(55.06% 0.157 260.1)
XYZ	xyz(17.9924, 16.2938, 59.3118)
Luminance	0.1630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366ECC #CC9436

analogous

#36B9CC #366ECC #4936CC

triadic

#366ECC #CC366E #6ECC36

tetradic

#366ECC #CC36B9 #CC9436 #36CC49

square

#366ECC #CC36B9 #CC9436 #36CC49

split-complementary

#366ECC #CC4936 #B9CC36

monochromatic

#1B3A6C #28549D #366ECC #6791D8 #98B4E5

Accessibility & contrast

On white

4.93

#366ECC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#366ECC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366ECC

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366ECC	#FFFFFF	#000000	##FFFFFF
##366ECC	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)

#3D78D0

Deuteranopia (green-blind)

#1A6ACA

Tritanopia (blue-blind)

#008493

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #366ecc;
/* rgb */ color: rgb(54, 110, 204);
/* oklch */ color: oklch(55.1% 0.157 260.1);

Tailwind

colors: {
  custom: {
    50: '#8097dc',
    500: '#366ecc',
    950: '#000000',
  },
}

SCSS

$custom: #366ecc;
$custom-light: #8097dc;
$custom-dark: #000000;

JSON

{
  "hex": "#366ecc",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 204
  },
  "hsl": {
    "h": 217.6,
    "s": 59.524,
    "l": 50.588
  },
  "oklch": {
    "l": 0.55062,
    "c": 0.15745,
    "h": 260.1
  },
  "luminance": 0.16296
}

Semantic roles & 50–950 ramp

primary

#366ECC

secondary

#D0B78E

accent

#A845E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366ECC

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

Preview Lab → · Contrast checker → · Palette generator →