#3661DF#3661DF

#3661DF is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.8% C 0.198 H 265.7°. Best body text is #FFFFFF at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#3661DF
RGB	rgb(54, 97, 223)
HSL	hsl(225, 73%, 54%)
HSV	hsv(225, 76%, 87%)
CMYK	cmyk(75.8%, 56.5%, 0%, 12.5%)
CIE-LAB	lab(45.16, 29.28, -68.48)
CIE-LCH	lch(45.16, 74.48, 293.15°)
OKLab	oklab(53.81% -0.0149 -0.1976)
OKLCH	oklch(53.81% 0.198 265.7)
XYZ	xyz(19.1106, 14.6592, 71.6201)
Luminance	0.1466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3661DF #DFB436

analogous

#36B5DF #3661DF #6036DF

triadic

#3661DF #DF3661 #61DF36

tetradic

#3661DF #DF36B5 #DFB436 #36DF60

square

#3661DF #DF36B5 #DFB436 #36DF60

split-complementary

#3661DF #DF6036 #B5DF36

monochromatic

#153285 #1E45BA #3661DF #6B8BE7 #A0B4F0

Accessibility & contrast

On white

5.34

#3661DF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#3661DF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3661DF

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3661DF	#FFFFFF	#000000	##FFFFFF
##3661DF	1.00	5.34	3.93	5.34
#FFFFFF	5.34	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073E3

Deuteranopia (green-blind)

#0063DD

Tritanopia (blue-blind)

#008096

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3661df;
/* rgb */ color: rgb(54, 97, 223);
/* oklch */ color: oklch(53.8% 0.198 265.7);

Tailwind

colors: {
  custom: {
    50: '#858dea',
    500: '#3661df',
    950: '#000000',
  },
}

SCSS

$custom: #3661df;
$custom-light: #858dea;
$custom-dark: #000000;

JSON

{
  "hex": "#3661df",
  "rgb": {
    "r": 54,
    "g": 97,
    "b": 223
  },
  "hsl": {
    "h": 224.734,
    "s": 72.532,
    "l": 54.314
  },
  "oklch": {
    "l": 0.53806,
    "c": 0.1982,
    "h": 265.7
  },
  "luminance": 0.14661
}

Semantic roles & 50–950 ramp

primary

#3661DF

secondary

#DCCA95

accent

#C139EF

background

#F9F8FE

surface

#F1F0FD

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3661DF

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

Preview Lab → · Contrast checker → · Palette generator →