#3660B5#3660B5

#3660B5 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 50.5% C 0.143 H 262.6°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#3660B5
RGB	rgb(54, 96, 181)
HSL	hsl(220, 54%, 46%)
HSV	hsv(220, 70%, 71%)
CMYK	cmyk(70.2%, 47%, 0%, 29%)
CIE-LAB	lab(41.98, 14.42, -49.43)
CIE-LCH	lch(41.98, 51.49, 286.26°)
OKLab	oklab(50.46% -0.0183 -0.1416)
OKLCH	oklch(50.46% 0.143 262.6)
XYZ	xyz(14.0417, 12.4848, 45.3769)
Luminance	0.1249 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3660B5 #B58B36

analogous

#369FB5 #3660B5 #4B36B5

triadic

#3660B5 #B53660 #60B536

tetradic

#3660B5 #B5369F #B58B36 #36B54B

square

#3660B5 #B5369F #B58B36 #36B54B

split-complementary

#3660B5 #B54B36 #9FB536

monochromatic

#1A2E57 #284786 #3660B5 #5A81CE #89A5DC

Accessibility & contrast

On white

6.00

#3660B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#3660B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3660B5

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3660B5	#FFFFFF	#000000	##FFFFFF
##3660B5	1.00	6.00	3.50	6.00
#FFFFFF	6.00	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3469B8

Deuteranopia (green-blind)

#185EB3

Tritanopia (blue-blind)

#007482

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3660b5;
/* rgb */ color: rgb(54, 96, 181);
/* oklch */ color: oklch(50.5% 0.143 262.6);

Tailwind

colors: {
  custom: {
    50: '#7c8ccc',
    500: '#3660b5',
    950: '#000000',
  },
}

SCSS

$custom: #3660b5;
$custom-light: #7c8ccc;
$custom-dark: #000000;

JSON

{
  "hex": "#3660b5",
  "rgb": {
    "r": 54,
    "g": 96,
    "b": 181
  },
  "hsl": {
    "h": 220.157,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.50462,
    "c": 0.1428,
    "h": 262.6
  },
  "luminance": 0.12486
}

Semantic roles & 50–950 ramp

primary

#3660B5

secondary

#C6AF81

accent

#AD4ADD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3660B5

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

Preview Lab → · Contrast checker → · Palette generator →