#3133A3#3133A3

#3133A3 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.9% C 0.175 H 274.3°. Best body text is #FFFFFF at 9.85:1 contrast (WCAG AA passes).

Color values

HEX	#3133A3
RGB	rgb(49, 51, 163)
HSL	hsl(239, 54%, 42%)
HSV	hsv(239, 70%, 64%)
CMYK	cmyk(69.9%, 68.7%, 0%, 36.1%)
CIE-LAB	lab(28.55, 36.37, -60.53)
CIE-LCH	lch(28.55, 70.62, 301.00°)
OKLab	oklab(39.91% 0.0131 -0.1749)
OKLCH	oklch(39.91% 0.175 274.3)
XYZ	xyz(9.0591, 5.6641, 35.2591)
Luminance	0.0566 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3133A3 #A3A131

analogous

#316CA3 #3133A3 #6831A3

triadic

#3133A3 #A33133 #33A331

tetradic

#3133A3 #A3316C #A3A131 #31A368

square

#3133A3 #A3316C #A3A131 #31A368

split-complementary

#3133A3 #A36831 #6CA331

monochromatic

#151645 #232474 #3133A3 #494BC8 #787AD6

Accessibility & contrast

On white

9.85

#3133A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#3133A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3133A3

9.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3133A3	#FFFFFF	#000000	##FFFFFF
##3133A3	1.00	9.85	2.13	9.85
#FFFFFF	9.85	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A6

Deuteranopia (green-blind)

#003EA1

Tritanopia (blue-blind)

#005167

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3133a3;
/* rgb */ color: rgb(49, 51, 163);
/* oklch */ color: oklch(39.9% 0.175 274.3);

Tailwind

colors: {
  custom: {
    50: '#796bbf',
    500: '#3133a3',
    950: '#000000',
  },
}

SCSS

$custom: #3133a3;
$custom-light: #796bbf;
$custom-dark: #000000;

JSON

{
  "hex": "#3133a3",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 163
  },
  "hsl": {
    "h": 238.947,
    "s": 53.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.39913,
    "c": 0.17538,
    "h": 274.3
  },
  "luminance": 0.05665
}

Semantic roles & 50–950 ramp

primary

#3133A3

secondary

#BFBD71

accent

#DB4BDD

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #3133A3

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

Preview Lab → · Contrast checker → · Palette generator →