#3831BF#3831BF

#3831BF is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.9% C 0.211 H 275.0°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#3831BF
RGB	rgb(56, 49, 191)
HSL	hsl(243, 59%, 47%)
HSV	hsv(243, 74%, 75%)
CMYK	cmyk(70.7%, 74.3%, 0%, 25.1%)
CIE-LAB	lab(31.34, 47.68, -72.63)
CIE-LCH	lch(31.34, 86.88, 303.28°)
OKLab	oklab(42.86% 0.0183 -0.21)
OKLCH	oklch(42.86% 0.211 275)
XYZ	xyz(12.1301, 6.7978, 49.9530)
Luminance	0.0680 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3831BF #B8BF31

analogous

#3171BF #3831BF #7F31BF

triadic

#3831BF #BF3831 #31BF38

tetradic

#3831BF #BF3171 #B8BF31 #31BF7F

square

#3831BF #BF3171 #B8BF31 #31BF7F

split-complementary

#3831BF #BF7F31 #71BF31

monochromatic

#1B185E #2A258E #3831BF #5F59D4 #8E8AE1

Accessibility & contrast

On white

8.90

#3831BF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#3831BF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3831BF

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3831BF	#FFFFFF	#000000	##FFFFFF
##3831BF	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050C3

Deuteranopia (green-blind)

#0043BC

Tritanopia (blue-blind)

#005A76

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3831bf;
/* rgb */ color: rgb(56, 49, 191);
/* oklch */ color: oklch(42.9% 0.211 275.0);

Tailwind

colors: {
  custom: {
    50: '#826bd4',
    500: '#3831bf',
    950: '#000000',
  },
}

SCSS

$custom: #3831bf;
$custom-light: #826bd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3831bf",
  "rgb": {
    "r": 56,
    "g": 49,
    "b": 191
  },
  "hsl": {
    "h": 242.958,
    "s": 59.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.42862,
    "c": 0.21081,
    "h": 275
  },
  "luminance": 0.06799
}

Semantic roles & 50–950 ramp

primary

#3831BF

secondary

#C7CB81

accent

#E245DB

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3831BF

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

Preview Lab → · Contrast checker → · Palette generator →