#3651BC#3651BC

#3651BC is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.9% C 0.171 H 268.4°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#3651BC
RGB	rgb(54, 81, 188)
HSL	hsl(228, 55%, 47%)
HSV	hsv(228, 71%, 74%)
CMYK	cmyk(71.3%, 56.9%, 0%, 26.3%)
CIE-LAB	lab(38.37, 26.75, -59.35)
CIE-LCH	lch(38.37, 65.10, 294.26°)
OKLab	oklab(47.88% -0.0047 -0.171)
OKLCH	oklch(47.88% 0.171 268.4)
XYZ	xyz(13.5377, 10.2986, 48.8416)
Luminance	0.1030 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3651BC #BCA136

analogous

#3694BC #3651BC #5E36BC

triadic

#3651BC #BC3651 #51BC36

tetradic

#3651BC #BC3694 #BCA136 #36BC5E

square

#3651BC #BC3694 #BCA136 #36BC5E

split-complementary

#3651BC #BC5E36 #94BC36

monochromatic

#1B285D #283D8C #3651BC #5E75D1 #8E9EDF

Accessibility & contrast

On white

6.86

#3651BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#3651BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3651BC

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3651BC	#FFFFFF	#000000	##FFFFFF
##3651BC	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C0

Deuteranopia (green-blind)

#0054BA

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3651bc;
/* rgb */ color: rgb(54, 81, 188);
/* oklch */ color: oklch(47.9% 0.171 268.4);

Tailwind

colors: {
  custom: {
    50: '#7e81d1',
    500: '#3651bc',
    950: '#000000',
  },
}

SCSS

$custom: #3651bc;
$custom-light: #7e81d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3651bc",
  "rgb": {
    "r": 54,
    "g": 81,
    "b": 188
  },
  "hsl": {
    "h": 227.91,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.47884,
    "c": 0.17112,
    "h": 268.4
  },
  "luminance": 0.103
}

Semantic roles & 50–950 ramp

primary

#3651BC

secondary

#C9BB85

accent

#C149DF

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3651BC

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

Preview Lab → · Contrast checker → · Palette generator →