#366BBE#366BBE

#366BBE is a mid, vivid blue. Relative luminance 0.150; OKLCH L 53.5% C 0.142 H 259.1°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#366BBE
RGB	rgb(54, 107, 190)
HSL	hsl(217, 56%, 48%)
HSV	hsv(217, 72%, 75%)
CMYK	cmyk(71.6%, 43.7%, 0%, 25.5%)
CIE-LAB	lab(45.66, 10.72, -48.77)
CIE-LCH	lch(45.66, 49.94, 282.40°)
OKLab	oklab(53.47% -0.0268 -0.1395)
OKLCH	oklch(53.47% 0.142 259.1)
XYZ	xyz(16.0699, 15.0156, 50.7566)
Luminance	0.1502 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BBE #BE8936

analogous

#36AFBE #366BBE #4536BE

triadic

#366BBE #BE366B #6BBE36

tetradic

#366BBE #BE36AF #BE8936 #36BE45

square

#366BBE #BE36AF #BE8936 #36BE45

split-complementary

#366BBE #BE4536 #AFBE36

monochromatic

#1B355F #28508E #366BBE #608CD2 #8FAEDF

Accessibility & contrast

On white

5.25

#366BBE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#366BBE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BBE

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BBE	#FFFFFF	#000000	##FFFFFF
##366BBE	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4273C1

Deuteranopia (green-blind)

#2A66BC

Tritanopia (blue-blind)

#007E8B

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366bbe;
/* rgb */ color: rgb(54, 107, 190);
/* oklch */ color: oklch(53.5% 0.142 259.1);

Tailwind

colors: {
  custom: {
    50: '#7e94d2',
    500: '#366bbe',
    950: '#000000',
  },
}

SCSS

$custom: #366bbe;
$custom-light: #7e94d2;
$custom-dark: #000000;

JSON

{
  "hex": "#366bbe",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 190
  },
  "hsl": {
    "h": 216.618,
    "s": 55.738,
    "l": 47.843
  },
  "oklch": {
    "l": 0.53474,
    "c": 0.14206,
    "h": 259.1
  },
  "luminance": 0.15017
}

Semantic roles & 50–950 ramp

primary

#366BBE

secondary

#CAAF86

accent

#A449DF

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366BBE

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

Preview Lab → · Contrast checker → · Palette generator →