#366BBD#366BBD

#366BBD is a mid, vivid blue. Relative luminance 0.150; OKLCH L 53.4% C 0.141 H 258.9°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#366BBD
RGB	rgb(54, 107, 189)
HSL	hsl(216, 56%, 48%)
HSV	hsv(216, 71%, 74%)
CMYK	cmyk(71.4%, 43.4%, 0%, 25.9%)
CIE-LAB	lab(45.60, 10.35, -48.29)
CIE-LCH	lch(45.60, 49.39, 282.10°)
OKLab	oklab(53.41% -0.027 -0.1381)
OKLCH	oklch(53.41% 0.141 258.9)
XYZ	xyz(15.9610, 14.9721, 50.1830)
Luminance	0.1497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BBD #BD8836

analogous

#36AFBD #366BBD #4436BD

triadic

#366BBD #BD366B #6BBD36

tetradic

#366BBD #BD36AF #BD8836 #36BD44

square

#366BBD #BD36AF #BD8836 #36BD44

split-complementary

#366BBD #BD4436 #AFBD36

monochromatic

#1B355E #28508D #366BBD #5F8CD1 #8FAEDF

Accessibility & contrast

On white

5.26

#366BBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#366BBD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BBD

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BBD	#FFFFFF	#000000	##FFFFFF
##366BBD	1.00	5.26	3.99	5.26
#FFFFFF	5.26	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4373C0

Deuteranopia (green-blind)

#2B66BB

Tritanopia (blue-blind)

#007E8B

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366bbd;
/* rgb */ color: rgb(54, 107, 189);
/* oklch */ color: oklch(53.4% 0.141 258.9);

Tailwind

colors: {
  custom: {
    50: '#7d94d1',
    500: '#366bbd',
    950: '#000000',
  },
}

SCSS

$custom: #366bbd;
$custom-light: #7d94d1;
$custom-dark: #000000;

JSON

{
  "hex": "#366bbd",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 189
  },
  "hsl": {
    "h": 216.444,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.53408,
    "c": 0.1407,
    "h": 258.9
  },
  "luminance": 0.14974
}

Semantic roles & 50–950 ramp

primary

#366BBD

secondary

#C9AF85

accent

#A449DF

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366BBD

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

Preview Lab → · Contrast checker → · Palette generator →