#3659BC#3659BC

#3659BC is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.5% C 0.161 H 266.0°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#3659BC
RGB	rgb(54, 89, 188)
HSL	hsl(224, 55%, 47%)
HSV	hsv(224, 71%, 74%)
CMYK	cmyk(71.3%, 52.7%, 0%, 26.3%)
CIE-LAB	lab(40.51, 21.55, -55.90)
CIE-LCH	lch(40.51, 59.91, 291.08°)
OKLab	oklab(49.49% -0.0113 -0.1608)
OKLCH	oklch(49.49% 0.161 266)
XYZ	xyz(14.1676, 11.5584, 49.0515)
Luminance	0.1156 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3659BC #BC9936

analogous

#369CBC #3659BC #5636BC

triadic

#3659BC #BC3659 #59BC36

tetradic

#3659BC #BC369C #BC9936 #36BC56

square

#3659BC #BC369C #BC9936 #36BC56

split-complementary

#3659BC #BC5636 #9CBC36

monochromatic

#1B2C5D #28428C #3659BC #5E7CD1 #8EA3DF

Accessibility & contrast

On white

6.34

#3659BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#3659BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3659BC

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3659BC	#FFFFFF	#000000	##FFFFFF
##3659BC	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1566C0

Deuteranopia (green-blind)

#005ABA

Tritanopia (blue-blind)

#007182

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3659bc;
/* rgb */ color: rgb(54, 89, 188);
/* oklch */ color: oklch(49.5% 0.161 266.0);

Tailwind

colors: {
  custom: {
    50: '#7e87d1',
    500: '#3659bc',
    950: '#000000',
  },
}

SCSS

$custom: #3659bc;
$custom-light: #7e87d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3659bc",
  "rgb": {
    "r": 54,
    "g": 89,
    "b": 188
  },
  "hsl": {
    "h": 224.328,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.4949,
    "c": 0.16115,
    "h": 266
  },
  "luminance": 0.1156
}

Semantic roles & 50–950 ramp

primary

#3659BC

secondary

#C9B785

accent

#B849DF

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3659BC

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

Preview Lab → · Contrast checker → · Palette generator →