#3665AA#3665AA

#3665AA is a mid, vivid blue. Relative luminance 0.130; OKLCH L 50.8% C 0.122 H 258.0°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#3665AA
RGB	rgb(54, 101, 170)
HSL	hsl(216, 52%, 44%)
HSV	hsv(216, 68%, 67%)
CMYK	cmyk(68.2%, 40.6%, 0%, 33.3%)
CIE-LAB	lab(42.75, 7.17, -41.73)
CIE-LCH	lch(42.75, 42.34, 279.75°)
OKLab	oklab(50.85% -0.0253 -0.1189)
OKLCH	oklch(50.85% 0.122 258)
XYZ	xyz(13.4281, 12.9926, 39.8226)
Luminance	0.1299 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665AA #AA7B36

analogous

#369FAA #3665AA #4136AA

triadic

#3665AA #AA3665 #65AA36

tetradic

#3665AA #AA369F #AA7B36 #36AA41

square

#3665AA #AA369F #AA7B36 #36AA41

split-complementary

#3665AA #AA4136 #9FAA36

monochromatic

#182E4D #27497C #3665AA #5484C9 #83A5D8

Accessibility & contrast

On white

5.84

#3665AA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#3665AA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665AA

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665AA	#FFFFFF	#000000	##FFFFFF
##3665AA	1.00	5.84	3.60	5.84
#FFFFFF	5.84	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#456BAD

Deuteranopia (green-blind)

#3460A9

Tritanopia (blue-blind)

#00757F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3665aa;
/* rgb */ color: rgb(54, 101, 170);
/* oklch */ color: oklch(50.8% 0.122 258.0);

Tailwind

colors: {
  custom: {
    50: '#7a90c4',
    500: '#3665aa',
    950: '#000000',
  },
}

SCSS

$custom: #3665aa;
$custom-light: #7a90c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3665aa",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 170
  },
  "hsl": {
    "h": 215.69,
    "s": 51.786,
    "l": 43.922
  },
  "oklch": {
    "l": 0.50846,
    "c": 0.12157,
    "h": 258
  },
  "luminance": 0.12994
}

Semantic roles & 50–950 ramp

primary

#3665AA

secondary

#C1A57B

accent

#A14DDB

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C12

muted

#7C7D81

Preview Lab

Preview with #3665AA

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

Preview Lab → · Contrast checker → · Palette generator →