#3665AC#3665AC

#3665AC is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.0% C 0.124 H 258.5°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#3665AC
RGB	rgb(54, 101, 172)
HSL	hsl(216, 52%, 44%)
HSV	hsv(216, 69%, 67%)
CMYK	cmyk(68.6%, 41.3%, 0%, 32.5%)
CIE-LAB	lab(42.87, 7.90, -42.73)
CIE-LCH	lch(42.87, 43.45, 280.48°)
OKLab	oklab(50.97% -0.0248 -0.1218)
OKLCH	oklch(50.97% 0.124 258.5)
XYZ	xyz(13.6187, 13.0688, 40.8265)
Luminance	0.1307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665AC #AC7D36

analogous

#36A0AC #3665AC #4236AC

triadic

#3665AC #AC3665 #65AC36

tetradic

#3665AC #AC36A0 #AC7D36 #36AC42

square

#3665AC #AC36A0 #AC7D36 #36AC42

split-complementary

#3665AC #AC4236 #A0AC36

monochromatic

#192E4F #274A7D #3665AC #5584CA #84A6D8

Accessibility & contrast

On white

5.81

#3665AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#3665AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665AC

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665AC	#FFFFFF	#000000	##FFFFFF
##3665AC	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#446BAF

Deuteranopia (green-blind)

#3260AB

Tritanopia (blue-blind)

#007580

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3665ac;
/* rgb */ color: rgb(54, 101, 172);
/* oklch */ color: oklch(51.0% 0.124 258.5);

Tailwind

colors: {
  custom: {
    50: '#7a90c5',
    500: '#3665ac',
    950: '#000000',
  },
}

SCSS

$custom: #3665ac;
$custom-light: #7a90c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3665ac",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 172
  },
  "hsl": {
    "h": 216.102,
    "s": 52.212,
    "l": 44.314
  },
  "oklch": {
    "l": 0.50972,
    "c": 0.12434,
    "h": 258.5
  },
  "luminance": 0.1307
}

Semantic roles & 50–950 ramp

primary

#3665AC

secondary

#C2A67C

accent

#A24CDC

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3665AC

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

Preview Lab → · Contrast checker → · Palette generator →