#3665BF#3665BF

#3665BF is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.2% C 0.151 H 261.9°. Best body text is #FFFFFF at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#3665BF
RGB	rgb(54, 101, 191)
HSL	hsl(219, 56%, 48%)
HSV	hsv(219, 72%, 75%)
CMYK	cmyk(71.7%, 47.1%, 0%, 25.1%)
CIE-LAB	lab(44.02, 14.91, -51.98)
CIE-LCH	lch(44.02, 54.07, 286.01°)
OKLab	oklab(52.23% -0.0213 -0.149)
OKLCH	oklch(52.23% 0.151 261.9)
XYZ	xyz(15.5756, 13.8516, 51.1329)
Luminance	0.1385 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665BF #BF9036

analogous

#36A9BF #3665BF #4B36BF

triadic

#3665BF #BF3665 #65BF36

tetradic

#3665BF #BF36A9 #BF9036 #36BF4B

square

#3665BF #BF36A9 #BF9036 #36BF4B

split-complementary

#3665BF #BF4B36 #A9BF36

monochromatic

#1B3360 #294C8F #3665BF #6087D2 #90ABE0

Accessibility & contrast

On white

5.57

#3665BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.77

#3665BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665BF

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665BF	#FFFFFF	#000000	##FFFFFF
##3665BF	1.00	5.57	3.77	5.57
#FFFFFF	5.57	1.00	21.00	1.00
#000000	3.77	21.00	1.00	21.00
##FFFFFF	5.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#356FC2

Deuteranopia (green-blind)

#1462BD

Tritanopia (blue-blind)

#007A89

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3665bf;
/* rgb */ color: rgb(54, 101, 191);
/* oklch */ color: oklch(52.2% 0.151 261.9);

Tailwind

colors: {
  custom: {
    50: '#7e90d3',
    500: '#3665bf',
    950: '#000000',
  },
}

SCSS

$custom: #3665bf;
$custom-light: #7e90d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3665bf",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 191
  },
  "hsl": {
    "h": 219.416,
    "s": 55.918,
    "l": 48.039
  },
  "oklch": {
    "l": 0.52233,
    "c": 0.15053,
    "h": 261.9
  },
  "luminance": 0.13853
}

Semantic roles & 50–950 ramp

primary

#3665BF

secondary

#CAB387

accent

#AC49DF

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3665BF

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

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