#343BBB#343BBB

#343BBB is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.7% C 0.196 H 272.5°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#343BBB
RGB	rgb(52, 59, 187)
HSL	hsl(237, 56%, 47%)
HSV	hsv(237, 72%, 73%)
CMYK	cmyk(72.2%, 68.4%, 0%, 26.7%)
CIE-LAB	lab(32.80, 40.12, -67.88)
CIE-LCH	lch(32.80, 78.85, 300.59°)
OKLab	oklab(43.72% 0.0087 -0.1963)
OKLCH	oklch(43.72% 0.196 272.5)
XYZ	xyz(11.9468, 7.4446, 47.8114)
Luminance	0.0745 (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

#343BBB #BBB434

analogous

#347FBB #343BBB #7134BB

triadic

#343BBB #BB343B #3BBB34

tetradic

#343BBB #BB347F #BBB434 #34BB71

square

#343BBB #BB347F #BBB434 #34BB71

split-complementary

#343BBB #BB7134 #7FBB34

monochromatic

#191D5B #272C8B #343BBB #5B61D1 #8B8FDF

Accessibility & contrast

On white

8.44

#343BBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#343BBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343BBB

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343BBB	#FFFFFF	#000000	##FFFFFF
##343BBB	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BF

Deuteranopia (green-blind)

#0047B9

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #343bbb;
/* rgb */ color: rgb(52, 59, 187);
/* oklch */ color: oklch(43.7% 0.196 272.5);

Tailwind

colors: {
  custom: {
    50: '#7f71d1',
    500: '#343bbb',
    950: '#000000',
  },
}

SCSS

$custom: #343bbb;
$custom-light: #7f71d1;
$custom-dark: #000000;

JSON

{
  "hex": "#343bbb",
  "rgb": {
    "r": 52,
    "g": 59,
    "b": 187
  },
  "hsl": {
    "h": 236.889,
    "s": 56.485,
    "l": 46.863
  },
  "oklch": {
    "l": 0.43721,
    "c": 0.19647,
    "h": 272.5
  },
  "luminance": 0.07446
}

Semantic roles & 50–950 ramp

primary

#343BBB

secondary

#C9C582

accent

#D848E0

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #343BBB

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

Preview Lab → · Contrast checker → · Palette generator →