#3659CC#3659CC

#3659CC is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.7% C 0.183 H 266.8°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#3659CC
RGB	rgb(54, 89, 204)
HSL	hsl(226, 60%, 51%)
HSV	hsv(226, 74%, 80%)
CMYK	cmyk(73.5%, 56.4%, 0%, 20%)
CIE-LAB	lab(41.67, 27.44, -63.30)
CIE-LCH	lch(41.67, 68.99, 293.44°)
OKLab	oklab(50.74% -0.0102 -0.1825)
OKLCH	oklch(50.74% 0.183 266.8)
XYZ	xyz(15.9890, 12.2869, 58.6440)
Luminance	0.1229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3659CC #CCA936

analogous

#36A4CC #3659CC #5E36CC

triadic

#3659CC #CC3659 #59CC36

tetradic

#3659CC #CC36A4 #CCA936 #36CC5E

square

#3659CC #CC36A4 #CCA936 #36CC5E

split-complementary

#3659CC #CC5E36 #A4CC36

monochromatic

#1B2E6C #28439D #3659CC #6781D8 #98AAE5

Accessibility & contrast

On white

6.07

#3659CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#3659CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3659CC

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3659CC	#FFFFFF	#000000	##FFFFFF
##3659CC	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D0

Deuteranopia (green-blind)

#005CCA

Tritanopia (blue-blind)

#00758A

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3659cc;
/* rgb */ color: rgb(54, 89, 204);
/* oklch */ color: oklch(50.7% 0.183 266.8);

Tailwind

colors: {
  custom: {
    50: '#8187dc',
    500: '#3659cc',
    950: '#000000',
  },
}

SCSS

$custom: #3659cc;
$custom-light: #8187dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3659cc",
  "rgb": {
    "r": 54,
    "g": 89,
    "b": 204
  },
  "hsl": {
    "h": 226,
    "s": 59.524,
    "l": 50.588
  },
  "oklch": {
    "l": 0.50735,
    "c": 0.1828,
    "h": 266.8
  },
  "luminance": 0.12289
}

Semantic roles & 50–950 ramp

primary

#3659CC

secondary

#D0C18E

accent

#BE45E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3659CC

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

Preview Lab → · Contrast checker → · Palette generator →