#3831BC#3831BC

#3831BC is a dark, highly saturated blue. Relative luminance 0.067; OKLCH L 42.6% C 0.207 H 275.2°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#3831BC
RGB	rgb(56, 49, 188)
HSL	hsl(243, 59%, 46%)
HSV	hsv(243, 74%, 74%)
CMYK	cmyk(70.2%, 73.9%, 0%, 26.3%)
CIE-LAB	lab(31.04, 46.71, -71.36)
CIE-LCH	lch(31.04, 85.29, 303.21°)
OKLab	oklab(42.56% 0.0189 -0.2063)
OKLCH	oklch(42.56% 0.207 275.2)
XYZ	xyz(11.8033, 6.6671, 48.2320)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 4.32

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3831BC #B5BC31

analogous

#316FBC #3831BC #7E31BC

triadic

#3831BC #BC3831 #31BC38

tetradic

#3831BC #BC316F #B5BC31 #31BC7E

square

#3831BC #BC316F #B5BC31 #31BC7E

split-complementary

#3831BC #BC7E31 #6FBC31

monochromatic

#1B185B #2A248B #3831BC #5D57D3 #8C88E0

Accessibility & contrast

On white

9.00

#3831BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#3831BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3831BC

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3831BC	#FFFFFF	#000000	##FFFFFF
##3831BC	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FC0

Deuteranopia (green-blind)

#0043BA

Tritanopia (blue-blind)

#005974

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3831bc;
/* rgb */ color: rgb(56, 49, 188);
/* oklch */ color: oklch(42.6% 0.207 275.2);

Tailwind

colors: {
  custom: {
    50: '#826bd1',
    500: '#3831bc',
    950: '#000000',
  },
}

SCSS

$custom: #3831bc;
$custom-light: #826bd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3831bc",
  "rgb": {
    "r": 56,
    "g": 49,
    "b": 188
  },
  "hsl": {
    "h": 243.022,
    "s": 58.65,
    "l": 46.471
  },
  "oklch": {
    "l": 0.42555,
    "c": 0.20719,
    "h": 275.2
  },
  "luminance": 0.06668
}

Semantic roles & 50–950 ramp

primary

#3831BC

secondary

#C6CA7F

accent

#E246DA

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3831BC

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

Preview Lab → · Contrast checker → · Palette generator →