#3831B6#3831B6

#3831B6 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.9% C 0.200 H 275.8°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#3831B6
RGB	rgb(56, 49, 182)
HSL	hsl(243, 58%, 45%)
HSV	hsv(243, 73%, 71%)
CMYK	cmyk(69.2%, 73.1%, 0%, 28.6%)
CIE-LAB	lab(30.43, 44.77, -68.80)
CIE-LCH	lch(30.43, 82.09, 303.05°)
OKLab	oklab(41.95% 0.0201 -0.1989)
OKLCH	oklch(41.95% 0.2 275.8)
XYZ	xyz(11.1699, 6.4137, 44.8962)
Luminance	0.0641 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 3.90

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3831B6 #AFB631

analogous

#316CB6 #3831B6 #7A31B6

triadic

#3831B6 #B63831 #31B638

tetradic

#3831B6 #B6316C #AFB631 #31B67A

square

#3831B6 #B6316C #AFB631 #31B67A

split-complementary

#3831B6 #B67A31 #6CB631

monochromatic

#1A1756 #292486 #3831B6 #5A53D1 #8884DE

Accessibility & contrast

On white

9.20

#3831B6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3831B6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3831B6

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3831B6	#FFFFFF	#000000	##FFFFFF
##3831B6	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DBA

Deuteranopia (green-blind)

#0042B4

Tritanopia (blue-blind)

#005771

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3831b6;
/* rgb */ color: rgb(56, 49, 182);
/* oklch */ color: oklch(41.9% 0.200 275.8);

Tailwind

colors: {
  custom: {
    50: '#816bcd',
    500: '#3831b6',
    950: '#000000',
  },
}

SCSS

$custom: #3831b6;
$custom-light: #816bcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3831b6",
  "rgb": {
    "r": 56,
    "g": 49,
    "b": 182
  },
  "hsl": {
    "h": 243.158,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.41945,
    "c": 0.19987,
    "h": 275.8
  },
  "luminance": 0.06415
}

Semantic roles & 50–950 ramp

primary

#3831B6

secondary

#C3C77C

accent

#E147D9

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3831B6

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

Preview Lab → · Contrast checker → · Palette generator →