#3339AA#3339AA

#3339AA is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.7% C 0.177 H 273.4°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#3339AA
RGB	rgb(51, 57, 170)
HSL	hsl(237, 54%, 43%)
HSV	hsv(237, 70%, 67%)
CMYK	cmyk(70%, 66.5%, 0%, 33.3%)
CIE-LAB	lab(30.72, 35.32, -61.19)
CIE-LCH	lch(30.72, 70.65, 300.00°)
OKLab	oklab(41.72% 0.0106 -0.1767)
OKLCH	oklch(41.72% 0.177 273.4)
XYZ	xyz(10.0816, 6.5314, 38.7518)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3339AA #AAA433

analogous

#3374AA #3339AA #6833AA

triadic

#3339AA #AA3339 #39AA33

tetradic

#3339AA #AA3374 #AAA433 #33AA68

square

#3339AA #AA3374 #AAA433 #33AA68

split-complementary

#3339AA #AA6833 #74AA33

monochromatic

#17194C #25297B #3339AA #5056CA #7F83D9

Accessibility & contrast

On white

9.11

#3339AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#3339AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3339AA

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3339AA	#FFFFFF	#000000	##FFFFFF
##3339AA	1.00	9.11	2.31	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAE

Deuteranopia (green-blind)

#0043A8

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3339aa;
/* rgb */ color: rgb(51, 57, 170);
/* oklch */ color: oklch(41.7% 0.177 273.4);

Tailwind

colors: {
  custom: {
    50: '#7b70c4',
    500: '#3339aa',
    950: '#000000',
  },
}

SCSS

$custom: #3339aa;
$custom-light: #7b70c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3339aa",
  "rgb": {
    "r": 51,
    "g": 57,
    "b": 170
  },
  "hsl": {
    "h": 236.975,
    "s": 53.846,
    "l": 43.333
  },
  "oklch": {
    "l": 0.41716,
    "c": 0.17705,
    "h": 273.4
  },
  "luminance": 0.06532
}

Semantic roles & 50–950 ramp

primary

#3339AA

secondary

#C2BE77

accent

#D64BDD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3339AA

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

Preview Lab → · Contrast checker → · Palette generator →