#366AB4#366AB4

#366AB4 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 52.6% C 0.130 H 257.5°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#366AB4
RGB	rgb(54, 106, 180)
HSL	hsl(215, 54%, 46%)
HSV	hsv(215, 70%, 71%)
CMYK	cmyk(70%, 41.1%, 0%, 29.4%)
CIE-LAB	lab(44.78, 7.67, -44.36)
CIE-LCH	lch(44.78, 45.02, 279.81°)
OKLab	oklab(52.61% -0.0279 -0.1265)
OKLCH	oklch(52.61% 0.13 257.5)
XYZ	xyz(14.9106, 14.3861, 45.1621)
Luminance	0.1439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366AB4 #B48036

analogous

#36A9B4 #366AB4 #4136B4

triadic

#366AB4 #B4366A #6AB436

tetradic

#366AB4 #B436A9 #B48036 #36B441

square

#366AB4 #B436A9 #B48036 #36B441

split-complementary

#366AB4 #B44136 #A9B436

monochromatic

#1A3356 #284E85 #366AB4 #5A8ACD #89ABDC

Accessibility & contrast

On white

5.42

#366AB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#366AB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366AB4

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366AB4	#FFFFFF	#000000	##FFFFFF
##366AB4	1.00	5.42	3.88	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4770B7

Deuteranopia (green-blind)

#3365B2

Tritanopia (blue-blind)

#007B86

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #366ab4;
/* rgb */ color: rgb(54, 106, 180);
/* oklch */ color: oklch(52.6% 0.130 257.5);

Tailwind

colors: {
  custom: {
    50: '#7c94cb',
    500: '#366ab4',
    950: '#000000',
  },
}

SCSS

$custom: #366ab4;
$custom-light: #7c94cb;
$custom-dark: #000000;

JSON

{
  "hex": "#366ab4",
  "rgb": {
    "r": 54,
    "g": 106,
    "b": 180
  },
  "hsl": {
    "h": 215.238,
    "s": 53.846,
    "l": 45.882
  },
  "oklch": {
    "l": 0.52607,
    "c": 0.1296,
    "h": 257.5
  },
  "luminance": 0.14388
}

Semantic roles & 50–950 ramp

primary

#366AB4

secondary

#C6A980

accent

#A14BDD

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366AB4

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

Preview Lab → · Contrast checker → · Palette generator →