#3661CD#3661CD

#3661CD is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.4% C 0.174 H 264.7°. Best body text is #FFFFFF at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#3661CD
RGB	rgb(54, 97, 205)
HSL	hsl(223, 60%, 51%)
HSV	hsv(223, 74%, 80%)
CMYK	cmyk(73.7%, 52.7%, 0%, 19.6%)
CIE-LAB	lab(43.86, 22.66, -60.32)
CIE-LCH	lch(43.86, 64.44, 290.59°)
OKLab	oklab(52.41% -0.0162 -0.1736)
OKLCH	oklch(52.41% 0.174 264.7)
XYZ	xyz(16.8116, 13.7396, 59.5118)
Luminance	0.1374 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3661CD #CDA236

analogous

#36ACCD #3661CD #5636CD

triadic

#3661CD #CD3661 #61CD36

tetradic

#3661CD #CD36AC #CDA236 #36CD56

square

#3661CD #CD36AC #CDA236 #36CD56

split-complementary

#3661CD #CD5636 #ACCD36

monochromatic

#1B336D #27499E #3661CD #6788D9 #98AEE5

Accessibility & contrast

On white

5.60

#3661CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.75

#3661CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3661CD

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3661CD	#FFFFFF	#000000	##FFFFFF
##3661CD	1.00	5.60	3.75	5.60
#FFFFFF	5.60	1.00	21.00	1.00
#000000	3.75	21.00	1.00	21.00
##FFFFFF	5.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#136FD1

Deuteranopia (green-blind)

#0061CB

Tritanopia (blue-blind)

#007B8D

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3661cd;
/* rgb */ color: rgb(54, 97, 205);
/* oklch */ color: oklch(52.4% 0.174 264.7);

Tailwind

colors: {
  custom: {
    50: '#818ddd',
    500: '#3661cd',
    950: '#000000',
  },
}

SCSS

$custom: #3661cd;
$custom-light: #818ddd;
$custom-dark: #000000;

JSON

{
  "hex": "#3661cd",
  "rgb": {
    "r": 54,
    "g": 97,
    "b": 205
  },
  "hsl": {
    "h": 222.914,
    "s": 60.159,
    "l": 50.784
  },
  "oklch": {
    "l": 0.52408,
    "c": 0.1744,
    "h": 264.7
  },
  "luminance": 0.13741
}

Semantic roles & 50–950 ramp

primary

#3661CD

secondary

#D1BE8E

accent

#B644E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3661CD

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

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