#3439AB#3439AB

#3439AB is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.9% C 0.178 H 273.7°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#3439AB
RGB	rgb(52, 57, 171)
HSL	hsl(237, 53%, 44%)
HSV	hsv(237, 70%, 67%)
CMYK	cmyk(69.6%, 66.7%, 0%, 32.9%)
CIE-LAB	lab(30.87, 35.80, -61.54)
CIE-LCH	lch(30.87, 71.19, 300.19°)
OKLab	oklab(41.87% 0.0116 -0.1777)
OKLCH	oklch(41.87% 0.178 273.7)
XYZ	xyz(10.2275, 6.5956, 39.2543)
Luminance	0.0660 (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

#3439AB #ABA634

analogous

#3474AB #3439AB #6A34AB

triadic

#3439AB #AB3439 #39AB34

tetradic

#3439AB #AB3474 #ABA634 #34AB6A

square

#3439AB #AB3474 #ABA634 #34AB6A

split-complementary

#3439AB #AB6A34 #74AB34

monochromatic

#171A4D #26297C #3439AB #5257CA #8184D9

Accessibility & contrast

On white

9.05

#3439AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#3439AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3439AB

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3439AB	#FFFFFF	#000000	##FFFFFF
##3439AB	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAF

Deuteranopia (green-blind)

#0043A9

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #3439ab;
/* rgb */ color: rgb(52, 57, 171);
/* oklch */ color: oklch(41.9% 0.178 273.7);

Tailwind

colors: {
  custom: {
    50: '#7c70c5',
    500: '#3439ab',
    950: '#000000',
  },
}

SCSS

$custom: #3439ab;
$custom-light: #7c70c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3439ab",
  "rgb": {
    "r": 52,
    "g": 57,
    "b": 171
  },
  "hsl": {
    "h": 237.479,
    "s": 53.363,
    "l": 43.725
  },
  "oklch": {
    "l": 0.41872,
    "c": 0.17811,
    "h": 273.7
  },
  "luminance": 0.06597
}

Semantic roles & 50–950 ramp

primary

#3439AB

secondary

#C2BF79

accent

#D74BDD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3439AB

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

Preview Lab → · Contrast checker → · Palette generator →