#3143A4#3143A4

#3143A4 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.9% C 0.157 H 270.4°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#3143A4
RGB	rgb(49, 67, 164)
HSL	hsl(231, 54%, 42%)
HSV	hsv(231, 70%, 64%)
CMYK	cmyk(70.1%, 59.1%, 0%, 35.7%)
CIE-LAB	lab(32.58, 26.41, -54.54)
CIE-LCH	lch(32.58, 60.60, 295.84°)
OKLab	oklab(42.9% 0.001 -0.1572)
OKLCH	oklch(42.9% 0.157 270.4)
XYZ	xyz(9.9723, 7.3466, 36.0073)
Luminance	0.0735 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3143A4 #A49231

analogous

#317DA4 #3143A4 #5931A4

triadic

#3143A4 #A43143 #43A431

tetradic

#3143A4 #A4317D #A49231 #31A459

square

#3143A4 #A4317D #A49231 #31A459

split-complementary

#3143A4 #A45931 #7DA431

monochromatic

#151C46 #233075 #3143A4 #495DC9 #7987D7

Accessibility & contrast

On white

8.50

#3143A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3143A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3143A4

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3143A4	#FFFFFF	#000000	##FFFFFF
##3143A4	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A7

Deuteranopia (green-blind)

#0048A2

Tritanopia (blue-blind)

#005B6D

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3143a4;
/* rgb */ color: rgb(49, 67, 164);
/* oklch */ color: oklch(42.9% 0.157 270.4);

Tailwind

colors: {
  custom: {
    50: '#7877c0',
    500: '#3143a4',
    950: '#000000',
  },
}

SCSS

$custom: #3143a4;
$custom-light: #7877c0;
$custom-dark: #000000;

JSON

{
  "hex": "#3143a4",
  "rgb": {
    "r": 49,
    "g": 67,
    "b": 164
  },
  "hsl": {
    "h": 230.609,
    "s": 53.991,
    "l": 41.765
  },
  "oklch": {
    "l": 0.42903,
    "c": 0.1572,
    "h": 270.4
  },
  "luminance": 0.07348
}

Semantic roles & 50–950 ramp

primary

#3143A4

secondary

#BFB372

accent

#C64ADD

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #3143A4

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

Preview Lab → · Contrast checker → · Palette generator →