#3340B9#3340B9

#3340B9 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.3% C 0.189 H 271.4°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#3340B9
RGB	rgb(51, 64, 185)
HSL	hsl(234, 57%, 46%)
HSV	hsv(234, 72%, 73%)
CMYK	cmyk(72.4%, 65.4%, 0%, 27.5%)
CIE-LAB	lab(33.72, 36.21, -65.20)
CIE-LCH	lch(33.72, 74.58, 299.05°)
OKLab	oklab(44.32% 0.0046 -0.1884)
OKLCH	oklch(44.32% 0.189 271.4)
XYZ	xyz(11.9526, 7.8722, 46.7791)
Luminance	0.0787 (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

#3340B9 #B9AC33

analogous

#3383B9 #3340B9 #6933B9

triadic

#3340B9 #B93340 #40B933

tetradic

#3340B9 #B93383 #B9AC33 #33B969

square

#3340B9 #B93383 #B9AC33 #33B969

split-complementary

#3340B9 #B96933 #83B933

monochromatic

#191F59 #262F89 #3340B9 #5864D1 #8891DE

Accessibility & contrast

On white

8.16

#3340B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#3340B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3340B9

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3340B9	#FFFFFF	#000000	##FFFFFF
##3340B9	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BD

Deuteranopia (green-blind)

#0049B7

Tritanopia (blue-blind)

#006077

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3340b9;
/* rgb */ color: rgb(51, 64, 185);
/* oklch */ color: oklch(44.3% 0.189 271.4);

Tailwind

colors: {
  custom: {
    50: '#7e75cf',
    500: '#3340b9',
    950: '#000000',
  },
}

SCSS

$custom: #3340b9;
$custom-light: #7e75cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3340b9",
  "rgb": {
    "r": 51,
    "g": 64,
    "b": 185
  },
  "hsl": {
    "h": 234.179,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.44317,
    "c": 0.1885,
    "h": 271.4
  },
  "luminance": 0.07873
}

Semantic roles & 50–950 ramp

primary

#3340B9

secondary

#C8C180

accent

#D148E0

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3340B9

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

Preview Lab → · Contrast checker → · Palette generator →