#3851BB#3851BB

#3851BB is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.9% C 0.169 H 269.0°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#3851BB
RGB	rgb(56, 81, 187)
HSL	hsl(229, 54%, 48%)
HSV	hsv(229, 70%, 73%)
CMYK	cmyk(70.1%, 56.7%, 0%, 26.7%)
CIE-LAB	lab(38.40, 26.66, -58.72)
CIE-LCH	lch(38.40, 64.49, 294.42°)
OKLab	oklab(47.91% -0.0029 -0.1692)
OKLCH	oklch(47.91% 0.169 269)
XYZ	xyz(13.5399, 10.3121, 48.2809)
Luminance	0.1031 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3851BB #BBA238

analogous

#3892BB #3851BB #6138BB

triadic

#3851BB #BB3851 #51BB38

tetradic

#3851BB #BB3892 #BBA238 #38BB61

square

#3851BB #BB3892 #BBA238 #38BB61

split-complementary

#3851BB #BB6138 #92BB38

monochromatic

#1C285D #2A3D8C #3851BB #6176D0 #909FDE

Accessibility & contrast

On white

6.86

#3851BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#3851BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3851BB

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3851BB	#FFFFFF	#000000	##FFFFFF
##3851BB	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)

#0061BF

Deuteranopia (green-blind)

#0055B9

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3851bb;
/* rgb */ color: rgb(56, 81, 187);
/* oklch */ color: oklch(47.9% 0.169 269.0);

Tailwind

colors: {
  custom: {
    50: '#7f81d0',
    500: '#3851bb',
    950: '#000000',
  },
}

SCSS

$custom: #3851bb;
$custom-light: #7f81d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3851bb",
  "rgb": {
    "r": 56,
    "g": 81,
    "b": 187
  },
  "hsl": {
    "h": 228.55,
    "s": 53.909,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47905,
    "c": 0.16918,
    "h": 269
  },
  "luminance": 0.10313
}

Semantic roles & 50–950 ramp

primary

#3851BB

secondary

#C8BC86

accent

#C14BDD

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3851BB

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

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