#3340BB#3340BB

#3340BB is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.5% C 0.191 H 271.3°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#3340BB
RGB	rgb(51, 64, 187)
HSL	hsl(234, 57%, 47%)
HSV	hsv(234, 73%, 73%)
CMYK	cmyk(72.7%, 65.8%, 0%, 26.7%)
CIE-LAB	lab(33.89, 36.92, -66.08)
CIE-LCH	lch(33.89, 75.70, 299.19°)
OKLab	oklab(44.5% 0.0045 -0.191)
OKLCH	oklch(44.5% 0.191 271.3)
XYZ	xyz(12.1652, 7.9572, 47.8988)
Luminance	0.0796 (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

#3340BB #BBAE33

analogous

#3384BB #3340BB #6A33BB

triadic

#3340BB #BB3340 #40BB33

tetradic

#3340BB #BB3384 #BBAE33 #33BB6A

square

#3340BB #BB3384 #BBAE33 #33BB6A

split-complementary

#3340BB #BB6A33 #84BB33

monochromatic

#191F5B #26308B #3340BB #5965D2 #8992DF

Accessibility & contrast

On white

8.10

#3340BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3340BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3340BB

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3340BB	#FFFFFF	#000000	##FFFFFF
##3340BB	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BF

Deuteranopia (green-blind)

#0049B9

Tritanopia (blue-blind)

#006178

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3340bb;
/* rgb */ color: rgb(51, 64, 187);
/* oklch */ color: oklch(44.5% 0.191 271.3);

Tailwind

colors: {
  custom: {
    50: '#7e75d1',
    500: '#3340bb',
    950: '#000000',
  },
}

SCSS

$custom: #3340bb;
$custom-light: #7e75d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3340bb",
  "rgb": {
    "r": 51,
    "g": 64,
    "b": 187
  },
  "hsl": {
    "h": 234.265,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.44502,
    "c": 0.19109,
    "h": 271.3
  },
  "luminance": 0.07958
}

Semantic roles & 50–950 ramp

primary

#3340BB

secondary

#C9C281

accent

#D247E0

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #3340BB

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

Preview Lab → · Contrast checker → · Palette generator →