#3133A1#3133A1

#3133A1 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.7% C 0.173 H 274.4°. Best body text is #FFFFFF at 9.91:1 contrast (WCAG AA passes).

Color values

HEX	#3133A1
RGB	rgb(49, 51, 161)
HSL	hsl(239, 53%, 41%)
HSV	hsv(239, 70%, 63%)
CMYK	cmyk(69.6%, 68.3%, 0%, 36.9%)
CIE-LAB	lab(28.36, 35.68, -59.63)
CIE-LCH	lch(28.36, 69.49, 300.89°)
OKLab	oklab(39.72% 0.0133 -0.1722)
OKLCH	oklch(39.72% 0.173 274.4)
XYZ	xyz(8.8813, 5.5930, 34.3228)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3133A1 #A19F31

analogous

#316BA1 #3133A1 #6731A1

triadic

#3133A1 #A13133 #33A131

tetradic

#3133A1 #A1316B #A19F31 #31A167

square

#3133A1 #A1316B #A19F31 #31A167

split-complementary

#3133A1 #A16731 #6BA131

monochromatic

#141543 #232472 #3133A1 #484AC7 #7779D6

Accessibility & contrast

On white

9.91

#3133A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#3133A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3133A1

9.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3133A1	#FFFFFF	#000000	##FFFFFF
##3133A1	1.00	9.91	2.12	9.91
#FFFFFF	9.91	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A4

Deuteranopia (green-blind)

#003E9F

Tritanopia (blue-blind)

#005065

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3133a1;
/* rgb */ color: rgb(49, 51, 161);
/* oklch */ color: oklch(39.7% 0.173 274.4);

Tailwind

colors: {
  custom: {
    50: '#796bbe',
    500: '#3133a1',
    950: '#000000',
  },
}

SCSS

$custom: #3133a1;
$custom-light: #796bbe;
$custom-dark: #000000;

JSON

{
  "hex": "#3133a1",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 161
  },
  "hsl": {
    "h": 238.929,
    "s": 53.333,
    "l": 41.176
  },
  "oklch": {
    "l": 0.39721,
    "c": 0.17275,
    "h": 274.4
  },
  "luminance": 0.05594
}

Semantic roles & 50–950 ramp

primary

#3133A1

secondary

#BEBC70

accent

#DA4BDD

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #3133A1

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

Preview Lab → · Contrast checker → · Palette generator →