#3143B0#3143B0

#3143B0 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.9% C 0.174 H 270.3°. Best body text is #FFFFFF at 8.20:1 contrast (WCAG AA passes).

Color values

HEX	#3143B0
RGB	rgb(49, 67, 176)
HSL	hsl(231, 56%, 44%)
HSV	hsv(231, 72%, 69%)
CMYK	cmyk(72.2%, 61.9%, 0%, 31%)
CIE-LAB	lab(33.56, 30.81, -60.12)
CIE-LCH	lch(33.56, 67.55, 297.14°)
OKLab	oklab(43.94% 0.0009 -0.1736)
OKLCH	oklch(43.94% 0.174 270.3)
XYZ	xyz(11.1076, 7.8007, 41.9862)
Luminance	0.0780 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3143B0 #B09E31

analogous

#3183B0 #3143B0 #5F31B0

triadic

#3143B0 #B03143 #43B031

tetradic

#3143B0 #B03183 #B09E31 #31B05F

square

#3143B0 #B03183 #B09E31 #31B05F

split-complementary

#3143B0 #B05F31 #83B031

monochromatic

#161F50 #243180 #3143B0 #5062CE #808DDC

Accessibility & contrast

On white

8.20

#3143B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.56

#3143B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3143B0

8.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3143B0	#FFFFFF	#000000	##FFFFFF
##3143B0	1.00	8.20	2.56	8.20
#FFFFFF	8.20	1.00	21.00	1.00
#000000	2.56	21.00	1.00	21.00
##FFFFFF	8.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B4

Deuteranopia (green-blind)

#0049AE

Tritanopia (blue-blind)

#005F73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3143b0;
/* rgb */ color: rgb(49, 67, 176);
/* oklch */ color: oklch(43.9% 0.174 270.3);

Tailwind

colors: {
  custom: {
    50: '#7b77c8',
    500: '#3143b0',
    950: '#000000',
  },
}

SCSS

$custom: #3143b0;
$custom-light: #7b77c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3143b0",
  "rgb": {
    "r": 49,
    "g": 67,
    "b": 176
  },
  "hsl": {
    "h": 231.496,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.43937,
    "c": 0.17357,
    "h": 270.3
  },
  "luminance": 0.07802
}

Semantic roles & 50–950 ramp

primary

#3143B0

secondary

#C5BA78

accent

#CA48E0

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3143B0

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

Preview Lab → · Contrast checker → · Palette generator →