#3143AA#3143AA

#3143AA is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.4% C 0.165 H 270.3°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#3143AA
RGB	rgb(49, 67, 170)
HSL	hsl(231, 55%, 43%)
HSV	hsv(231, 71%, 67%)
CMYK	cmyk(71.2%, 60.6%, 0%, 33.3%)
CIE-LAB	lab(33.07, 28.62, -57.35)
CIE-LCH	lch(33.07, 64.09, 296.52°)
OKLab	oklab(43.42% 0.001 -0.1655)
OKLCH	oklch(43.42% 0.165 270.3)
XYZ	xyz(10.5270, 7.5685, 38.9285)
Luminance	0.0757 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3143AA #AA9831

analogous

#3180AA #3143AA #5B31AA

triadic

#3143AA #AA3143 #43AA31

tetradic

#3143AA #AA3180 #AA9831 #31AA5B

square

#3143AA #AA3180 #AA9831 #31AA5B

split-complementary

#3143AA #AA5B31 #80AA31

monochromatic

#161E4B #23307A #3143AA #4D60CC #7C8AD9

Accessibility & contrast

On white

8.35

#3143AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3143AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3143AA

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3143AA	#FFFFFF	#000000	##FFFFFF
##3143AA	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AD

Deuteranopia (green-blind)

#0048A8

Tritanopia (blue-blind)

#005D70

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3143aa;
/* rgb */ color: rgb(49, 67, 170);
/* oklch */ color: oklch(43.4% 0.165 270.3);

Tailwind

colors: {
  custom: {
    50: '#7977c4',
    500: '#3143aa',
    950: '#000000',
  },
}

SCSS

$custom: #3143aa;
$custom-light: #7977c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3143aa",
  "rgb": {
    "r": 49,
    "g": 67,
    "b": 170
  },
  "hsl": {
    "h": 231.074,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.43415,
    "c": 0.16545,
    "h": 270.3
  },
  "luminance": 0.0757
}

Semantic roles & 50–950 ramp

primary

#3143AA

secondary

#C2B675

accent

#C849DF

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #3143AA

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

Preview Lab → · Contrast checker → · Palette generator →