#3660C9#3660C9

#3660C9 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.9% C 0.170 H 264.7°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#3660C9
RGB	rgb(54, 96, 201)
HSL	hsl(223, 58%, 50%)
HSV	hsv(223, 73%, 79%)
CMYK	cmyk(73.1%, 52.2%, 0%, 21.2%)
CIE-LAB	lab(43.31, 21.83, -58.91)
CIE-LCH	lch(43.31, 62.82, 290.33°)
OKLab	oklab(51.9% -0.0158 -0.1695)
OKLCH	oklch(51.9% 0.17 264.7)
XYZ	xyz(16.2431, 13.3653, 56.9707)
Luminance	0.1337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3660C9 #C99F36

analogous

#36AAC9 #3660C9 #5536C9

triadic

#3660C9 #C93660 #60C936

tetradic

#3660C9 #C936AA #C99F36 #36C955

square

#3660C9 #C936AA #C99F36 #36C955

split-complementary

#3660C9 #C95536 #AAC936

monochromatic

#1C3269 #294999 #3660C9 #6686D6 #96ACE3

Accessibility & contrast

On white

5.72

#3660C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#3660C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3660C9

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3660C9	#FFFFFF	#000000	##FFFFFF
##3660C9	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#186DCD

Deuteranopia (green-blind)

#0060C7

Tritanopia (blue-blind)

#00798B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3660c9;
/* rgb */ color: rgb(54, 96, 201);
/* oklch */ color: oklch(51.9% 0.170 264.7);

Tailwind

colors: {
  custom: {
    50: '#808cda',
    500: '#3660c9',
    950: '#000000',
  },
}

SCSS

$custom: #3660c9;
$custom-light: #808cda;
$custom-dark: #000000;

JSON

{
  "hex": "#3660c9",
  "rgb": {
    "r": 54,
    "g": 96,
    "b": 201
  },
  "hsl": {
    "h": 222.857,
    "s": 57.647,
    "l": 50
  },
  "oklch": {
    "l": 0.51904,
    "c": 0.17023,
    "h": 264.7
  },
  "luminance": 0.13367
}

Semantic roles & 50–950 ramp

primary

#3660C9

secondary

#CEBC8C

accent

#B547E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3660C9

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

Preview Lab → · Contrast checker → · Palette generator →