#3133A9#3133A9

#3133A9 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.5% C 0.183 H 273.9°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#3133A9
RGB	rgb(49, 51, 169)
HSL	hsl(239, 55%, 43%)
HSV	hsv(239, 71%, 66%)
CMYK	cmyk(71%, 69.8%, 0%, 33.7%)
CIE-LAB	lab(29.12, 38.45, -63.22)
CIE-LCH	lch(29.12, 73.99, 301.31°)
OKLab	oklab(40.5% 0.0123 -0.1827)
OKLCH	oklch(40.5% 0.183 273.9)
XYZ	xyz(9.6095, 5.8843, 38.1578)
Luminance	0.0588 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.40

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3133A9 #A9A731

analogous

#316FA9 #3133A9 #6B31A9

triadic

#3133A9 #A93133 #33A931

tetradic

#3133A9 #A9316F #A9A731 #31A96B

square

#3133A9 #A9316F #A9A731 #31A96B

split-complementary

#3133A9 #A96B31 #6FA931

monochromatic

#15164A #23257A #3133A9 #4C4ECB #7C7DD9

Accessibility & contrast

On white

9.65

#3133A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#3133A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3133A9

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3133A9	#FFFFFF	#000000	##FFFFFF
##3133A9	1.00	9.65	2.18	9.65
#FFFFFF	9.65	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAD

Deuteranopia (green-blind)

#003FA7

Tritanopia (blue-blind)

#00536A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3133a9;
/* rgb */ color: rgb(49, 51, 169);
/* oklch */ color: oklch(40.5% 0.183 273.9);

Tailwind

colors: {
  custom: {
    50: '#7b6bc4',
    500: '#3133a9',
    950: '#000000',
  },
}

SCSS

$custom: #3133a9;
$custom-light: #7b6bc4;
$custom-dark: #000000;

JSON

{
  "hex": "#3133a9",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 169
  },
  "hsl": {
    "h": 239,
    "s": 55.046,
    "l": 42.745
  },
  "oklch": {
    "l": 0.40498,
    "c": 0.18314,
    "h": 273.9
  },
  "luminance": 0.05885
}

Semantic roles & 50–950 ramp

primary

#3133A9

secondary

#C1C074

accent

#DC49DE

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3133A9

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

Preview Lab → · Contrast checker → · Palette generator →