#3143AE#3143AE

#3143AE is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.8% C 0.171 H 270.3°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#3143AE
RGB	rgb(49, 67, 174)
HSL	hsl(231, 56%, 44%)
HSV	hsv(231, 72%, 68%)
CMYK	cmyk(71.8%, 61.5%, 0%, 31.8%)
CIE-LAB	lab(33.40, 30.08, -59.20)
CIE-LCH	lch(33.40, 66.40, 296.94°)
OKLab	oklab(43.76% 0.001 -0.1709)
OKLCH	oklch(43.76% 0.171 270.3)
XYZ	xyz(10.9112, 7.7222, 40.9517)
Luminance	0.0772 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3143AE #AE9C31

analogous

#3181AE #3143AE #5D31AE

triadic

#3143AE #AE3143 #43AE31

tetradic

#3143AE #AE3181 #AE9C31 #31AE5D

square

#3143AE #AE3181 #AE9C31 #31AE5D

split-complementary

#3143AE #AE5D31 #81AE31

monochromatic

#161E4E #24317E #3143AE #4F61CD #7F8CDB

Accessibility & contrast

On white

8.25

#3143AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#3143AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3143AE

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3143AE	#FFFFFF	#000000	##FFFFFF
##3143AE	1.00	8.25	2.54	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B2

Deuteranopia (green-blind)

#0049AC

Tritanopia (blue-blind)

#005E72

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3143ae;
/* rgb */ color: rgb(49, 67, 174);
/* oklch */ color: oklch(43.8% 0.171 270.3);

Tailwind

colors: {
  custom: {
    50: '#7a77c7',
    500: '#3143ae',
    950: '#000000',
  },
}

SCSS

$custom: #3143ae;
$custom-light: #7a77c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3143ae",
  "rgb": {
    "r": 49,
    "g": 67,
    "b": 174
  },
  "hsl": {
    "h": 231.36,
    "s": 56.054,
    "l": 43.725
  },
  "oklch": {
    "l": 0.43762,
    "c": 0.17088,
    "h": 270.3
  },
  "luminance": 0.07723
}

Semantic roles & 50–950 ramp

primary

#3143AE

secondary

#C4B977

accent

#CA48DF

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3143AE

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

Preview Lab → · Contrast checker → · Palette generator →