#3143AD#3143AD

#3143AD is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.7% C 0.170 H 270.3°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#3143AD
RGB	rgb(49, 67, 173)
HSL	hsl(231, 56%, 44%)
HSV	hsv(231, 72%, 68%)
CMYK	cmyk(71.7%, 61.3%, 0%, 32.2%)
CIE-LAB	lab(33.31, 29.72, -58.74)
CIE-LCH	lch(33.31, 65.83, 296.84°)
OKLab	oklab(43.67% 0.001 -0.1695)
OKLCH	oklch(43.67% 0.17 270.3)
XYZ	xyz(10.8140, 7.6833, 40.4402)
Luminance	0.0768 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3143AD #AD9B31

analogous

#3181AD #3143AD #5D31AD

triadic

#3143AD #AD3143 #43AD31

tetradic

#3143AD #AD3181 #AD9B31 #31AD5D

square

#3143AD #AD3181 #AD9B31 #31AD5D

split-complementary

#3143AD #AD5D31 #81AD31

monochromatic

#161E4E #23317D #3143AD #4E61CD #7E8BDA

Accessibility & contrast

On white

8.28

#3143AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#3143AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3143AD

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3143AD	#FFFFFF	#000000	##FFFFFF
##3143AD	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B0

Deuteranopia (green-blind)

#0049AB

Tritanopia (blue-blind)

#005E71

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3143ad;
/* rgb */ color: rgb(49, 67, 173);
/* oklch */ color: oklch(43.7% 0.170 270.3);

Tailwind

colors: {
  custom: {
    50: '#7a77c6',
    500: '#3143ad',
    950: '#000000',
  },
}

SCSS

$custom: #3143ad;
$custom-light: #7a77c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3143ad",
  "rgb": {
    "r": 49,
    "g": 67,
    "b": 173
  },
  "hsl": {
    "h": 231.29,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.43674,
    "c": 0.16953,
    "h": 270.3
  },
  "luminance": 0.07684
}

Semantic roles & 50–950 ramp

primary

#3143AD

secondary

#C3B877

accent

#C949DF

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3143AD

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

Preview Lab → · Contrast checker → · Palette generator →