#3665AD#3665AD

#3665AD is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.0% C 0.126 H 258.7°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#3665AD
RGB	rgb(54, 101, 173)
HSL	hsl(216, 52%, 45%)
HSV	hsv(216, 69%, 68%)
CMYK	cmyk(68.8%, 41.6%, 0%, 32.2%)
CIE-LAB	lab(42.92, 8.27, -43.22)
CIE-LCH	lch(42.92, 44.00, 280.83°)
OKLab	oklab(51.04% -0.0246 -0.1233)
OKLCH	oklch(51.04% 0.126 258.7)
XYZ	xyz(13.7151, 13.1074, 41.3342)
Luminance	0.1311 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665AD #AD7E36

analogous

#36A0AD #3665AD #4336AD

triadic

#3665AD #AD3665 #65AD36

tetradic

#3665AD #AD36A0 #AD7E36 #36AD43

square

#3665AD #AD36A0 #AD7E36 #36AD43

split-complementary

#3665AD #AD4336 #A0AD36

monochromatic

#192F50 #274A7E #3665AD #5684CA #85A6D9

Accessibility & contrast

On white

5.80

#3665AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#3665AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665AD

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665AD	#FFFFFF	#000000	##FFFFFF
##3665AD	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#446BB0

Deuteranopia (green-blind)

#3160AC

Tritanopia (blue-blind)

#007680

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3665ad;
/* rgb */ color: rgb(54, 101, 173);
/* oklch */ color: oklch(51.0% 0.126 258.7);

Tailwind

colors: {
  custom: {
    50: '#7b90c6',
    500: '#3665ad',
    950: '#000000',
  },
}

SCSS

$custom: #3665ad;
$custom-light: #7b90c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3665ad",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 173
  },
  "hsl": {
    "h": 216.303,
    "s": 52.423,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51036,
    "c": 0.12572,
    "h": 258.7
  },
  "luminance": 0.13109
}

Semantic roles & 50–950 ramp

primary

#3665AD

secondary

#C2A77C

accent

#A34CDC

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3665AD

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

Preview Lab → · Contrast checker → · Palette generator →