#343AA1#343AA1

#343AA1 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.1% C 0.164 H 274.1°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#343AA1
RGB	rgb(52, 58, 161)
HSL	hsl(237, 51%, 42%)
HSV	hsv(237, 68%, 63%)
CMYK	cmyk(67.7%, 64%, 0%, 36.9%)
CIE-LAB	lab(30.23, 31.64, -56.57)
CIE-LCH	lch(30.23, 64.82, 299.22°)
OKLab	oklab(41.13% 0.0117 -0.1632)
OKLCH	oklch(41.13% 0.164 274.1)
XYZ	xyz(9.3601, 6.3285, 34.4396)
Luminance	0.0633 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#343AA1 #A19B34

analogous

#3471A1 #343AA1 #6534A1

triadic

#343AA1 #A1343A #3AA134

tetradic

#343AA1 #A13471 #A19B34 #34A165

square

#343AA1 #A13471 #A19B34 #34A165

split-complementary

#343AA1 #A16534 #71A134

monochromatic

#161944 #252973 #343AA1 #4D53C5 #7B80D4

Accessibility & contrast

On white

9.27

#343AA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#343AA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343AA1

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343AA1	#FFFFFF	#000000	##FFFFFF
##343AA1	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA4

Deuteranopia (green-blind)

#00429F

Tritanopia (blue-blind)

#005468

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #343aa1;
/* rgb */ color: rgb(52, 58, 161);
/* oklch */ color: oklch(41.1% 0.164 274.1);

Tailwind

colors: {
  custom: {
    50: '#7970be',
    500: '#343aa1',
    950: '#000000',
  },
}

SCSS

$custom: #343aa1;
$custom-light: #7970be;
$custom-dark: #000000;

JSON

{
  "hex": "#343aa1",
  "rgb": {
    "r": 52,
    "g": 58,
    "b": 161
  },
  "hsl": {
    "h": 236.697,
    "s": 51.174,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41131,
    "c": 0.16358,
    "h": 274.1
  },
  "luminance": 0.06329
}

Semantic roles & 50–950 ramp

primary

#343AA1

secondary

#BDB974

accent

#D34DDB

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #343AA1

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

Preview Lab → · Contrast checker → · Palette generator →