#3133AA#3133AA

#3133AA is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.6% C 0.184 H 273.8°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#3133AA
RGB	rgb(49, 51, 170)
HSL	hsl(239, 55%, 43%)
HSV	hsv(239, 71%, 67%)
CMYK	cmyk(71.2%, 70%, 0%, 33.3%)
CIE-LAB	lab(29.21, 38.80, -63.66)
CIE-LCH	lch(29.21, 74.55, 301.36°)
OKLab	oklab(40.6% 0.0122 -0.184)
OKLCH	oklch(40.6% 0.184 273.8)
XYZ	xyz(9.7037, 5.9220, 38.6541)
Luminance	0.0592 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.30

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3133AA #AAA831

analogous

#3170AA #3133AA #6B31AA

triadic

#3133AA #AA3133 #33AA31

tetradic

#3133AA #AA3170 #AAA831 #31AA6B

square

#3133AA #AA3170 #AAA831 #31AA6B

split-complementary

#3133AA #AA6B31 #70AA31

monochromatic

#16164B #23257A #3133AA #4D4FCC #7C7ED9

Accessibility & contrast

On white

9.61

#3133AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#3133AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3133AA

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3133AA	#FFFFFF	#000000	##FFFFFF
##3133AA	1.00	9.61	2.18	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BAE

Deuteranopia (green-blind)

#003FA8

Tritanopia (blue-blind)

#00546A

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3133aa;
/* rgb */ color: rgb(49, 51, 170);
/* oklch */ color: oklch(40.6% 0.184 273.8);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3133aa",
  "rgb": {
    "r": 49,
    "g": 51,
    "b": 170
  },
  "hsl": {
    "h": 239.008,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.40596,
    "c": 0.18442,
    "h": 273.8
  },
  "luminance": 0.05923
}

Semantic roles & 50–950 ramp

primary

#3133AA

secondary

#C2C175

accent

#DC49DF

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3133AA

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

Preview Lab → · Contrast checker → · Palette generator →