#3651BD#3651BD

#3651BD is a mid, vivid blue. Relative luminance 0.103; OKLCH L 48.0% C 0.172 H 268.4°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#3651BD
RGB	rgb(54, 81, 189)
HSL	hsl(228, 56%, 48%)
HSV	hsv(228, 71%, 74%)
CMYK	cmyk(71.4%, 57.1%, 0%, 25.9%)
CIE-LAB	lab(38.45, 27.12, -59.81)
CIE-LCH	lch(38.45, 65.67, 294.39°)
OKLab	oklab(47.96% -0.0047 -0.1724)
OKLCH	oklch(47.96% 0.172 268.4)
XYZ	xyz(13.6459, 10.3419, 49.4113)
Luminance	0.1034 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3651BD #BDA236

analogous

#3695BD #3651BD #5E36BD

triadic

#3651BD #BD3651 #51BD36

tetradic

#3651BD #BD3695 #BDA236 #36BD5E

square

#3651BD #BD3695 #BDA236 #36BD5E

split-complementary

#3651BD #BD5E36 #95BD36

monochromatic

#1B285E #283D8D #3651BD #5F76D1 #8F9FDF

Accessibility & contrast

On white

6.84

#3651BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#3651BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3651BD

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3651BD	#FFFFFF	#000000	##FFFFFF
##3651BD	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C1

Deuteranopia (green-blind)

#0055BB

Tritanopia (blue-blind)

#006C7F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3651bd;
/* rgb */ color: rgb(54, 81, 189);
/* oklch */ color: oklch(48.0% 0.172 268.4);

Tailwind

colors: {
  custom: {
    50: '#7f81d2',
    500: '#3651bd',
    950: '#000000',
  },
}

SCSS

$custom: #3651bd;
$custom-light: #7f81d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3651bd",
  "rgb": {
    "r": 54,
    "g": 81,
    "b": 189
  },
  "hsl": {
    "h": 228,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47964,
    "c": 0.17247,
    "h": 268.4
  },
  "luminance": 0.10343
}

Semantic roles & 50–950 ramp

primary

#3651BD

secondary

#C9BC85

accent

#C149DF

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3651BD

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

Preview Lab → · Contrast checker → · Palette generator →