#3140B3#3140B3

#3140B3 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.7% C 0.181 H 270.9°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#3140B3
RGB	rgb(49, 64, 179)
HSL	hsl(233, 57%, 45%)
HSV	hsv(233, 73%, 70%)
CMYK	cmyk(72.6%, 64.2%, 0%, 29.8%)
CIE-LAB	lab(33.08, 33.83, -62.69)
CIE-LCH	lch(33.08, 71.24, 298.35°)
OKLab	oklab(43.66% 0.0029 -0.1812)
OKLCH	oklch(43.66% 0.181 270.9)
XYZ	xyz(11.2339, 7.5733, 43.5088)
Luminance	0.0757 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3140B3 #B3A431

analogous

#3181B3 #3140B3 #6331B3

triadic

#3140B3 #B33140 #40B331

tetradic

#3140B3 #B33181 #B3A431 #31B363

square

#3140B3 #B33181 #B3A431 #31B363

split-complementary

#3140B3 #B36331 #81B331

monochromatic

#171E53 #242F83 #3140B3 #5260D0 #828CDD

Accessibility & contrast

On white

8.35

#3140B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#3140B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3140B3

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3140B3	#FFFFFF	#000000	##FFFFFF
##3140B3	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)

#0054B7

Deuteranopia (green-blind)

#0048B1

Tritanopia (blue-blind)

#005E73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3140b3;
/* rgb */ color: rgb(49, 64, 179);
/* oklch */ color: oklch(43.7% 0.181 270.9);

Tailwind

colors: {
  custom: {
    50: '#7c75cb',
    500: '#3140b3',
    950: '#000000',
  },
}

SCSS

$custom: #3140b3;
$custom-light: #7c75cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3140b3",
  "rgb": {
    "r": 49,
    "g": 64,
    "b": 179
  },
  "hsl": {
    "h": 233.077,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43658,
    "c": 0.18118,
    "h": 270.9
  },
  "luminance": 0.07574
}

Semantic roles & 50–950 ramp

primary

#3140B3

secondary

#C6BD7A

accent

#CF48E0

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3140B3

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

Preview Lab → · Contrast checker → · Palette generator →