#2B399D#2B399D

#2B399D is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.0% C 0.162 H 270.9°. Best body text is #FFFFFF at 9.66:1 contrast (WCAG AA passes).

Color values

HEX	#2B399D
RGB	rgb(43, 57, 157)
HSL	hsl(233, 57%, 39%)
HSV	hsv(233, 73%, 62%)
CMYK	cmyk(72.6%, 63.7%, 0%, 38.4%)
CIE-LAB	lab(29.09, 29.62, -56.02)
CIE-LCH	lch(29.09, 63.37, 297.86°)
OKLab	oklab(40.04% 0.0026 -0.1618)
OKLCH	oklch(40.04% 0.162 270.9)
XYZ	xyz(8.5431, 5.8733, 32.5752)
Luminance	0.0587 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B399D #9D8F2B

analogous

#2B729D #2B399D #562B9D

triadic

#2B399D #9D2B39 #399D2B

tetradic

#2B399D #9D2B72 #9D8F2B #2B9D56

square

#2B399D #9D2B72 #9D8F2B #2B9D56

split-complementary

#2B399D #9D562B #729D2B

monochromatic

#11163D #1E286D #2B399D #3C4DCA #6C79D7

Accessibility & contrast

On white

9.66

#2B399D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#2B399D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B399D

9.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B399D	#FFFFFF	#000000	##FFFFFF
##2B399D	1.00	9.66	2.17	9.66
#FFFFFF	9.66	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA0

Deuteranopia (green-blind)

#003F9B

Tritanopia (blue-blind)

#005365

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2b399d;
/* rgb */ color: rgb(43, 57, 157);
/* oklch */ color: oklch(40.0% 0.162 270.9);

Tailwind

colors: {
  custom: {
    50: '#756fbb',
    500: '#2b399d',
    950: '#000000',
  },
}

SCSS

$custom: #2b399d;
$custom-light: #756fbb;
$custom-dark: #000000;

JSON

{
  "hex": "#2b399d",
  "rgb": {
    "r": 43,
    "g": 57,
    "b": 157
  },
  "hsl": {
    "h": 232.632,
    "s": 57,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40045,
    "c": 0.16181,
    "h": 270.9
  },
  "luminance": 0.05874
}

Semantic roles & 50–950 ramp

primary

#2B399D

secondary

#BDB366

accent

#CE48E0

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2B399D

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

Preview Lab → · Contrast checker → · Palette generator →