#3331AA#3331AA

#3331AA is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.4% C 0.186 H 274.9°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#3331AA
RGB	rgb(51, 49, 170)
HSL	hsl(241, 55%, 43%)
HSV	hsv(241, 71%, 67%)
CMYK	cmyk(70%, 71.2%, 0%, 33.3%)
CIE-LAB	lab(28.91, 40.23, -64.16)
CIE-LCH	lch(28.91, 75.73, 302.09°)
OKLab	oklab(40.41% 0.0158 -0.1854)
OKLCH	oklch(40.41% 0.186 274.9)
XYZ	xyz(9.7169, 5.8018, 38.6302)
Luminance	0.0580 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.29

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3331AA #A8AA31

analogous

#316BAA #3331AA #7031AA

triadic

#3331AA #AA3331 #31AA33

tetradic

#3331AA #AA316B #A8AA31 #31AA70

square

#3331AA #AA316B #A8AA31 #31AA70

split-complementary

#3331AA #AA7031 #6BAA31

monochromatic

#16164B #25237A #3331AA #4F4DCC #7E7CD9

Accessibility & contrast

On white

9.72

#3331AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#3331AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3331AA

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3331AA	#FFFFFF	#000000	##FFFFFF
##3331AA	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAE

Deuteranopia (green-blind)

#003FA8

Tritanopia (blue-blind)

#00526A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3331aa;
/* rgb */ color: rgb(51, 49, 170);
/* oklch */ color: oklch(40.4% 0.186 274.9);

Tailwind

colors: {
  custom: {
    50: '#7c6ac4',
    500: '#3331aa',
    950: '#000000',
  },
}

SCSS

$custom: #3331aa;
$custom-light: #7c6ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#3331aa",
  "rgb": {
    "r": 51,
    "g": 49,
    "b": 170
  },
  "hsl": {
    "h": 240.992,
    "s": 55.251,
    "l": 42.941
  },
  "oklch": {
    "l": 0.40409,
    "c": 0.18612,
    "h": 274.9
  },
  "luminance": 0.05803
}

Semantic roles & 50–950 ramp

primary

#3331AA

secondary

#C1C275

accent

#DF49DC

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #3331AA

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

Preview Lab → · Contrast checker → · Palette generator →