#3143B8#3143B8

#3143B8 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.6% C 0.184 H 270.2°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#3143B8
RGB	rgb(49, 67, 184)
HSL	hsl(232, 58%, 46%)
HSV	hsv(232, 73%, 72%)
CMYK	cmyk(73.4%, 63.6%, 0%, 27.8%)
CIE-LAB	lab(34.25, 33.72, -63.74)
CIE-LCH	lch(34.25, 72.11, 297.88°)
OKLab	oklab(44.65% 0.0007 -0.1842)
OKLCH	oklch(44.65% 0.184 270.2)
XYZ	xyz(11.9225, 8.1267, 46.2784)
Luminance	0.0813 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.70

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3143B8 #B8A631

analogous

#3186B8 #3143B8 #6231B8

triadic

#3143B8 #B83143 #43B831

tetradic

#3143B8 #B83186 #B8A631 #31B862

square

#3143B8 #B83186 #B8A631 #31B862

split-complementary

#3143B8 #B86231 #86B831

monochromatic

#172057 #243188 #3143B8 #5565D2 #8591DE

Accessibility & contrast

On white

8.00

#3143B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#3143B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3143B8

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3143B8	#FFFFFF	#000000	##FFFFFF
##3143B8	1.00	8.00	2.63	8.00
#FFFFFF	8.00	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	8.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BC

Deuteranopia (green-blind)

#004AB6

Tritanopia (blue-blind)

#006177

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3143b8;
/* rgb */ color: rgb(49, 67, 184);
/* oklch */ color: oklch(44.6% 0.184 270.2);

Tailwind

colors: {
  custom: {
    50: '#7d77ce',
    500: '#3143b8',
    950: '#000000',
  },
}

SCSS

$custom: #3143b8;
$custom-light: #7d77ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3143b8",
  "rgb": {
    "r": 49,
    "g": 67,
    "b": 184
  },
  "hsl": {
    "h": 232,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.4465,
    "c": 0.1842,
    "h": 270.2
  },
  "luminance": 0.08128
}

Semantic roles & 50–950 ramp

primary

#3143B8

secondary

#C8BE7D

accent

#CD47E1

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3143B8

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

Preview Lab → · Contrast checker → · Palette generator →