#3133AD#3133AD

#3133AD is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.9% C 0.188 H 273.6°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#3133AD
RGB	rgb(49, 51, 173)
HSL	hsl(239, 56%, 44%)
HSV	hsv(239, 72%, 68%)
CMYK	cmyk(71.7%, 70.5%, 0%, 32.2%)
CIE-LAB	lab(29.51, 39.83, -64.98)
CIE-LCH	lch(29.51, 76.21, 301.50°)
OKLab	oklab(40.89% 0.0118 -0.1879)
OKLCH	oklch(40.89% 0.188 273.6)
XYZ	xyz(9.9908, 6.0368, 40.1658)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.00

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3133AD #ADAB31

analogous

#3171AD #3133AD #6D31AD

triadic

#3133AD #AD3133 #33AD31

tetradic

#3133AD #AD3171 #ADAB31 #31AD6D

square

#3133AD #AD3171 #ADAB31 #31AD6D

split-complementary

#3133AD #AD6D31 #71AD31

monochromatic

#16174E #23257D #3133AD #4E50CD #7E7FDA

Accessibility & contrast

On white

9.51

#3133AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#3133AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3133AD

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3133AD	#FFFFFF	#000000	##FFFFFF
##3133AD	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB1

Deuteranopia (green-blind)

#0040AB

Tritanopia (blue-blind)

#00556C

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3133ad;
/* rgb */ color: rgb(49, 51, 173);
/* oklch */ color: oklch(40.9% 0.188 273.6);

Tailwind

colors: {
  custom: {
    50: '#7b6cc7',
    500: '#3133ad',
    950: '#000000',
  },
}

SCSS

$custom: #3133ad;
$custom-light: #7b6cc7;
$custom-dark: #000000;

JSON

{
  "hex": "#3133ad",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 173
  },
  "hsl": {
    "h": 239.032,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.40893,
    "c": 0.18826,
    "h": 273.6
  },
  "luminance": 0.06038
}

Semantic roles & 50–950 ramp

primary

#3133AD

secondary

#C3C277

accent

#DD49DF

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3133AD

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

Preview Lab → · Contrast checker → · Palette generator →