#3133A8#3133A8

#3133A8 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.4% C 0.182 H 273.9°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#3133A8
RGB	rgb(49, 51, 168)
HSL	hsl(239, 55%, 43%)
HSV	hsv(239, 71%, 66%)
CMYK	cmyk(70.8%, 69.6%, 0%, 34.1%)
CIE-LAB	lab(29.02, 38.11, -62.77)
CIE-LCH	lch(29.02, 73.43, 301.26°)
OKLab	oklab(40.4% 0.0124 -0.1814)
OKLCH	oklch(40.4% 0.182 273.9)
XYZ	xyz(9.5160, 5.8469, 37.6653)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.50

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3133A8 #A8A631

analogous

#316EA8 #3133A8 #6B31A8

triadic

#3133A8 #A83133 #33A831

tetradic

#3133A8 #A8316E #A8A631 #31A86B

square

#3133A8 #A8316E #A8A631 #31A86B

split-complementary

#3133A8 #A86B31 #6EA831

monochromatic

#151649 #232579 #3133A8 #4C4ECB #7B7CD8

Accessibility & contrast

On white

9.68

#3133A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#3133A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3133A8

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3133A8	#FFFFFF	#000000	##FFFFFF
##3133A8	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAC

Deuteranopia (green-blind)

#003FA6

Tritanopia (blue-blind)

#005369

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3133a8;
/* rgb */ color: rgb(49, 51, 168);
/* oklch */ color: oklch(40.4% 0.182 273.9);

Tailwind

colors: {
  custom: {
    50: '#7a6bc3',
    500: '#3133a8',
    950: '#000000',
  },
}

SCSS

$custom: #3133a8;
$custom-light: #7a6bc3;
$custom-dark: #000000;

JSON

{
  "hex": "#3133a8",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 168
  },
  "hsl": {
    "h": 238.992,
    "s": 54.839,
    "l": 42.549
  },
  "oklch": {
    "l": 0.404,
    "c": 0.18186,
    "h": 273.9
  },
  "luminance": 0.05848
}

Semantic roles & 50–950 ramp

primary

#3133A8

secondary

#C1C074

accent

#DC4ADE

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3133A8

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

Preview Lab → · Contrast checker → · Palette generator →