#3140B4#3140B4

#3140B4 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.7% C 0.182 H 270.9°. Best body text is #FFFFFF at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#3140B4
RGB	rgb(49, 64, 180)
HSL	hsl(233, 57%, 45%)
HSV	hsv(233, 73%, 71%)
CMYK	cmyk(72.8%, 64.4%, 0%, 29.4%)
CIE-LAB	lab(33.17, 34.19, -63.14)
CIE-LCH	lch(33.17, 71.81, 298.44°)
OKLab	oklab(43.75% 0.0029 -0.1825)
OKLCH	oklch(43.75% 0.182 270.9)
XYZ	xyz(11.3354, 7.6139, 44.0434)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3140B4 #B4A531

analogous

#3181B4 #3140B4 #6431B4

triadic

#3140B4 #B43140 #40B431

tetradic

#3140B4 #B43181 #B4A531 #31B464

square

#3140B4 #B43181 #B4A531 #31B464

split-complementary

#3140B4 #B46431 #81B431

monochromatic

#171E54 #242F84 #3140B4 #5261D0 #828DDD

Accessibility & contrast

On white

8.32

#3140B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#3140B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3140B4

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3140B4	#FFFFFF	#000000	##FFFFFF
##3140B4	1.00	8.32	2.52	8.32
#FFFFFF	8.32	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B8

Deuteranopia (green-blind)

#0048B2

Tritanopia (blue-blind)

#005E74

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #3140b4;
/* rgb */ color: rgb(49, 64, 180);
/* oklch */ color: oklch(43.7% 0.182 270.9);

Tailwind

colors: {
  custom: {
    50: '#7c75cb',
    500: '#3140b4',
    950: '#000000',
  },
}

SCSS

$custom: #3140b4;
$custom-light: #7c75cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3140b4",
  "rgb": {
    "r": 49,
    "g": 64,
    "b": 180
  },
  "hsl": {
    "h": 233.13,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43749,
    "c": 0.18249,
    "h": 270.9
  },
  "luminance": 0.07615
}

Semantic roles & 50–950 ramp

primary

#3140B4

secondary

#C6BE7B

accent

#CF47E0

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3140B4

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

Preview Lab → · Contrast checker → · Palette generator →