#343DAB#343DAB

#343DAB is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.6% C 0.173 H 272.9°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#343DAB
RGB	rgb(52, 61, 171)
HSL	hsl(235, 53%, 44%)
HSV	hsv(235, 70%, 67%)
CMYK	cmyk(69.6%, 64.3%, 0%, 32.9%)
CIE-LAB	lab(31.82, 33.27, -59.97)
CIE-LCH	lch(31.82, 68.58, 299.02°)
OKLab	oklab(42.57% 0.0087 -0.1731)
OKLCH	oklch(42.57% 0.173 272.9)
XYZ	xyz(10.4331, 7.0068, 39.3228)
Luminance	0.0701 (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

#343DAB #ABA234

analogous

#3478AB #343DAB #6634AB

triadic

#343DAB #AB343D #3DAB34

tetradic

#343DAB #AB3478 #ABA234 #34AB66

square

#343DAB #AB3478 #ABA234 #34AB66

split-complementary

#343DAB #AB6634 #78AB34

monochromatic

#171C4D #262C7C #343DAB #525BCA #8187D9

Accessibility & contrast

On white

8.74

#343DAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#343DAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #343DAB

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##343DAB	#FFFFFF	#000000	##FFFFFF
##343DAB	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AF

Deuteranopia (green-blind)

#0045A9

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #343dab;
/* rgb */ color: rgb(52, 61, 171);
/* oklch */ color: oklch(42.6% 0.173 272.9);

Tailwind

colors: {
  custom: {
    50: '#7b72c5',
    500: '#343dab',
    950: '#000000',
  },
}

SCSS

$custom: #343dab;
$custom-light: #7b72c5;
$custom-dark: #000000;

JSON

{
  "hex": "#343dab",
  "rgb": {
    "r": 52,
    "g": 61,
    "b": 171
  },
  "hsl": {
    "h": 235.462,
    "s": 53.363,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42568,
    "c": 0.17335,
    "h": 272.9
  },
  "luminance": 0.07008
}

Semantic roles & 50–950 ramp

primary

#343DAB

secondary

#C2BC79

accent

#D24BDD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #343DAB

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

Preview Lab → · Contrast checker → · Palette generator →