#366BBF#366BBF

#366BBF is a mid, vivid blue. Relative luminance 0.151; OKLCH L 53.5% C 0.143 H 259.3°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#366BBF
RGB	rgb(54, 107, 191)
HSL	hsl(217, 56%, 48%)
HSV	hsv(217, 72%, 75%)
CMYK	cmyk(71.7%, 44%, 0%, 25.1%)
CIE-LAB	lab(45.72, 11.09, -49.25)
CIE-LCH	lch(45.72, 50.49, 282.69°)
OKLab	oklab(53.54% -0.0266 -0.1409)
OKLCH	oklch(53.54% 0.143 259.3)
XYZ	xyz(16.1796, 15.0595, 51.3342)
Luminance	0.1506 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BBF #BF8A36

analogous

#36AFBF #366BBF #4536BF

triadic

#366BBF #BF366B #6BBF36

tetradic

#366BBF #BF36AF #BF8A36 #36BF45

square

#366BBF #BF36AF #BF8A36 #36BF45

split-complementary

#366BBF #BF4536 #AFBF36

monochromatic

#1B3660 #29508F #366BBF #608CD2 #90AFE0

Accessibility & contrast

On white

5.23

#366BBF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#366BBF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BBF

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BBF	#FFFFFF	#000000	##FFFFFF
##366BBF	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4173C2

Deuteranopia (green-blind)

#2866BD

Tritanopia (blue-blind)

#007F8B

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366bbf;
/* rgb */ color: rgb(54, 107, 191);
/* oklch */ color: oklch(53.5% 0.143 259.3);

Tailwind

colors: {
  custom: {
    50: '#7e94d3',
    500: '#366bbf',
    950: '#000000',
  },
}

SCSS

$custom: #366bbf;
$custom-light: #7e94d3;
$custom-dark: #000000;

JSON

{
  "hex": "#366bbf",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 191
  },
  "hsl": {
    "h": 216.788,
    "s": 55.918,
    "l": 48.039
  },
  "oklch": {
    "l": 0.53539,
    "c": 0.14342,
    "h": 259.3
  },
  "luminance": 0.15061
}

Semantic roles & 50–950 ramp

primary

#366BBF

secondary

#CAB087

accent

#A549DF

background

#F8F9FD

surface

#EFF1FA

border

#CACBD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #366BBF

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

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