#3651BF#3651BF

#3651BF is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.1% C 0.175 H 268.5°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#3651BF
RGB	rgb(54, 81, 191)
HSL	hsl(228, 56%, 48%)
HSV	hsv(228, 72%, 75%)
CMYK	cmyk(71.7%, 57.6%, 0%, 25.1%)
CIE-LAB	lab(38.60, 27.85, -60.74)
CIE-LCH	lch(38.60, 66.82, 294.63°)
OKLab	oklab(48.13% -0.0046 -0.1751)
OKLCH	oklch(48.13% 0.175 268.5)
XYZ	xyz(13.8645, 10.4293, 50.5625)
Luminance	0.1043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3651BF #BFA436

analogous

#3695BF #3651BF #5F36BF

triadic

#3651BF #BF3651 #51BF36

tetradic

#3651BF #BF3695 #BFA436 #36BF5F

square

#3651BF #BF3695 #BFA436 #36BF5F

split-complementary

#3651BF #BF5F36 #95BF36

monochromatic

#1B2960 #293D8F #3651BF #6077D2 #90A0E0

Accessibility & contrast

On white

6.80

#3651BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3651BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3651BF

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3651BF	#FFFFFF	#000000	##FFFFFF
##3651BF	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C3

Deuteranopia (green-blind)

#0055BD

Tritanopia (blue-blind)

#006C80

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3651bf;
/* rgb */ color: rgb(54, 81, 191);
/* oklch */ color: oklch(48.1% 0.175 268.5);

Tailwind

colors: {
  custom: {
    50: '#7f81d3',
    500: '#3651bf',
    950: '#000000',
  },
}

SCSS

$custom: #3651bf;
$custom-light: #7f81d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3651bf",
  "rgb": {
    "r": 54,
    "g": 81,
    "b": 191
  },
  "hsl": {
    "h": 228.175,
    "s": 55.918,
    "l": 48.039
  },
  "oklch": {
    "l": 0.48127,
    "c": 0.17517,
    "h": 268.5
  },
  "luminance": 0.10431
}

Semantic roles & 50–950 ramp

primary

#3651BF

secondary

#CABD87

accent

#C249DF

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3651BF

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

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