#3660B4#3660B4

#3660B4 is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.4% C 0.141 H 262.5°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#3660B4
RGB	rgb(54, 96, 180)
HSL	hsl(220, 54%, 46%)
HSV	hsv(220, 70%, 71%)
CMYK	cmyk(70%, 46.7%, 0%, 29.4%)
CIE-LAB	lab(41.91, 14.05, -48.95)
CIE-LCH	lch(41.91, 50.92, 286.02°)
OKLab	oklab(50.39% -0.0185 -0.1402)
OKLCH	oklch(50.39% 0.141 262.5)
XYZ	xyz(13.9395, 12.4439, 44.8384)
Luminance	0.1245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3660B4 #B48A36

analogous

#369FB4 #3660B4 #4B36B4

triadic

#3660B4 #B43660 #60B436

tetradic

#3660B4 #B4369F #B48A36 #36B44B

square

#3660B4 #B4369F #B48A36 #36B44B

split-complementary

#3660B4 #B44B36 #9FB436

monochromatic

#1A2E56 #284785 #3660B4 #5A80CD #89A4DC

Accessibility & contrast

On white

6.02

#3660B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#3660B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3660B4

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3660B4	#FFFFFF	#000000	##FFFFFF
##3660B4	1.00	6.02	3.49	6.02
#FFFFFF	6.02	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3569B7

Deuteranopia (green-blind)

#1A5DB2

Tritanopia (blue-blind)

#007481

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3660b4;
/* rgb */ color: rgb(54, 96, 180);
/* oklch */ color: oklch(50.4% 0.141 262.5);

Tailwind

colors: {
  custom: {
    50: '#7c8ccb',
    500: '#3660b4',
    950: '#000000',
  },
}

SCSS

$custom: #3660b4;
$custom-light: #7c8ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#3660b4",
  "rgb": {
    "r": 54,
    "g": 96,
    "b": 180
  },
  "hsl": {
    "h": 220,
    "s": 53.846,
    "l": 45.882
  },
  "oklch": {
    "l": 0.50393,
    "c": 0.14141,
    "h": 262.5
  },
  "luminance": 0.12445
}

Semantic roles & 50–950 ramp

primary

#3660B4

secondary

#C6AE80

accent

#AC4BDD

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3660B4

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

Preview Lab → · Contrast checker → · Palette generator →