#3133A5#3133A5

#3133A5 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.1% C 0.178 H 274.1°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#3133A5
RGB	rgb(49, 51, 165)
HSL	hsl(239, 54%, 42%)
HSV	hsv(239, 70%, 65%)
CMYK	cmyk(70.3%, 69.1%, 0%, 35.3%)
CIE-LAB	lab(28.74, 37.07, -61.43)
CIE-LCH	lch(28.74, 71.75, 301.11°)
OKLab	oklab(40.11% 0.0128 -0.1775)
OKLCH	oklch(40.11% 0.178 274.1)
XYZ	xyz(9.2397, 5.7364, 36.2103)
Luminance	0.0574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3133A5 #A5A331

analogous

#316DA5 #3133A5 #6931A5

triadic

#3133A5 #A53133 #33A531

tetradic

#3133A5 #A5316D #A5A331 #31A569

square

#3133A5 #A5316D #A5A331 #31A569

split-complementary

#3133A5 #A56931 #6DA531

monochromatic

#151647 #232476 #3133A5 #4A4CC9 #797BD7

Accessibility & contrast

On white

9.78

#3133A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#3133A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3133A5

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3133A5	#FFFFFF	#000000	##FFFFFF
##3133A5	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A8

Deuteranopia (green-blind)

#003EA3

Tritanopia (blue-blind)

#005268

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3133a5;
/* rgb */ color: rgb(49, 51, 165);
/* oklch */ color: oklch(40.1% 0.178 274.1);

Tailwind

colors: {
  custom: {
    50: '#7a6bc1',
    500: '#3133a5',
    950: '#000000',
  },
}

SCSS

$custom: #3133a5;
$custom-light: #7a6bc1;
$custom-dark: #000000;

JSON

{
  "hex": "#3133a5",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 165
  },
  "hsl": {
    "h": 238.966,
    "s": 54.206,
    "l": 41.961
  },
  "oklch": {
    "l": 0.40107,
    "c": 0.17798,
    "h": 274.1
  },
  "luminance": 0.05737
}

Semantic roles & 50–950 ramp

primary

#3133A5

secondary

#C0BE72

accent

#DB4ADE

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #3133A5

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

Preview Lab → · Contrast checker → · Palette generator →