#366CBD#366CBD

#366CBD is a mid, vivid blue. Relative luminance 0.152; OKLCH L 53.6% C 0.140 H 258.4°. Best body text is #FFFFFF at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#366CBD
RGB	rgb(54, 108, 189)
HSL	hsl(216, 56%, 48%)
HSV	hsv(216, 71%, 74%)
CMYK	cmyk(71.4%, 42.9%, 0%, 25.9%)
CIE-LAB	lab(45.88, 9.72, -47.83)
CIE-LCH	lch(45.88, 48.81, 281.49°)
OKLab	oklab(53.63% -0.0279 -0.1367)
OKLCH	oklch(53.63% 0.14 258.4)
XYZ	xyz(16.0659, 15.1818, 50.2179)
Luminance	0.1518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CBD #BD8736

analogous

#36B0BD #366CBD #4336BD

triadic

#366CBD #BD366C #6CBD36

tetradic

#366CBD #BD36B0 #BD8736 #36BD43

square

#366CBD #BD36B0 #BD8736 #36BD43

split-complementary

#366CBD #BD4336 #B0BD36

monochromatic

#1B365E #28518D #366CBD #5F8DD1 #8FAFDF

Accessibility & contrast

On white

5.20

#366CBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#366CBD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CBD

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CBD	#FFFFFF	#000000	##FFFFFF
##366CBD	1.00	5.20	4.04	5.20
#FFFFFF	5.20	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4573C0

Deuteranopia (green-blind)

#2D67BB

Tritanopia (blue-blind)

#007F8B

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366cbd;
/* rgb */ color: rgb(54, 108, 189);
/* oklch */ color: oklch(53.6% 0.140 258.4);

Tailwind

colors: {
  custom: {
    50: '#7d95d1',
    500: '#366cbd',
    950: '#000000',
  },
}

SCSS

$custom: #366cbd;
$custom-light: #7d95d1;
$custom-dark: #000000;

JSON

{
  "hex": "#366cbd",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 189
  },
  "hsl": {
    "h": 216,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.5363,
    "c": 0.13955,
    "h": 258.4
  },
  "luminance": 0.15184
}

Semantic roles & 50–950 ramp

primary

#366CBD

secondary

#C9AE85

accent

#A349DF

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366CBD

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

Preview Lab → · Contrast checker → · Palette generator →