#3851BF#3851BF

#3851BF is a mid, vivid blue. Relative luminance 0.105; OKLCH L 48.2% C 0.175 H 269.1°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#3851BF
RGB	rgb(56, 81, 191)
HSL	hsl(229, 55%, 48%)
HSV	hsv(229, 71%, 75%)
CMYK	cmyk(70.7%, 57.6%, 0%, 25.1%)
CIE-LAB	lab(38.70, 28.12, -60.57)
CIE-LCH	lch(38.70, 66.78, 294.90°)
OKLab	oklab(48.23% -0.0028 -0.1746)
OKLCH	oklch(48.23% 0.175 269.1)
XYZ	xyz(13.9741, 10.4858, 50.5676)
Luminance	0.1049 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3851BF #BFA638

analogous

#3894BF #3851BF #6238BF

triadic

#3851BF #BF3851 #51BF38

tetradic

#3851BF #BF3894 #BFA638 #38BF62

square

#3851BF #BF3894 #BFA638 #38BF62

split-complementary

#3851BF #BF6238 #94BF38

monochromatic

#1C2960 #2A3D90 #3851BF #6377D1 #92A1DF

Accessibility & contrast

On white

6.78

#3851BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#3851BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3851BF

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3851BF	#FFFFFF	#000000	##FFFFFF
##3851BF	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C3

Deuteranopia (green-blind)

#0055BD

Tritanopia (blue-blind)

#006C80

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3851bf;
/* rgb */ color: rgb(56, 81, 191);
/* oklch */ color: oklch(48.2% 0.175 269.1);

Tailwind

colors: {
  custom: {
    50: '#8081d3',
    500: '#3851bf',
    950: '#000000',
  },
}

SCSS

$custom: #3851bf;
$custom-light: #8081d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3851bf",
  "rgb": {
    "r": 56,
    "g": 81,
    "b": 191
  },
  "hsl": {
    "h": 228.889,
    "s": 54.656,
    "l": 48.431
  },
  "oklch": {
    "l": 0.48227,
    "c": 0.17461,
    "h": 269.1
  },
  "luminance": 0.10487
}

Semantic roles & 50–950 ramp

primary

#3851BF

secondary

#CABE89

accent

#C34ADE

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3851BF

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

Preview Lab → · Contrast checker → · Palette generator →