#3665C4#3665C4

#3665C4 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.6% C 0.157 H 262.5°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#3665C4
RGB	rgb(54, 101, 196)
HSL	hsl(220, 57%, 49%)
HSV	hsv(220, 72%, 77%)
CMYK	cmyk(72.4%, 48.5%, 0%, 23.1%)
CIE-LAB	lab(44.34, 16.76, -54.35)
CIE-LCH	lch(44.34, 56.88, 287.14°)
OKLab	oklab(52.58% -0.0205 -0.156)
OKLCH	oklch(52.58% 0.157 262.5)
XYZ	xyz(16.1353, 14.0754, 54.0803)
Luminance	0.1408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665C4 #C49536

analogous

#36ACC4 #3665C4 #4E36C4

triadic

#3665C4 #C43665 #65C436

tetradic

#3665C4 #C436AC #C49536 #36C44E

square

#3665C4 #C436AC #C49536 #36C44E

split-complementary

#3665C4 #C44E36 #ACC436

monochromatic

#1C3464 #294C94 #3665C4 #6389D4 #93ADE1

Accessibility & contrast

On white

5.50

#3665C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3665C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665C4

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665C4	#FFFFFF	#000000	##FFFFFF
##3665C4	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3070C7

Deuteranopia (green-blind)

#0063C2

Tritanopia (blue-blind)

#007B8B

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3665c4;
/* rgb */ color: rgb(54, 101, 196);
/* oklch */ color: oklch(52.6% 0.157 262.5);

Tailwind

colors: {
  custom: {
    50: '#7f90d6',
    500: '#3665c4',
    950: '#000000',
  },
}

SCSS

$custom: #3665c4;
$custom-light: #7f90d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3665c4",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 196
  },
  "hsl": {
    "h": 220.141,
    "s": 56.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.52583,
    "c": 0.15736,
    "h": 262.5
  },
  "luminance": 0.14077
}

Semantic roles & 50–950 ramp

primary

#3665C4

secondary

#CCB689

accent

#AE48E0

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3665C4

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

Preview Lab → · Contrast checker → · Palette generator →