#2B399B#2B399B

#2B399B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.9% C 0.159 H 270.9°. Best body text is #FFFFFF at 9.72:1 contrast (WCAG AA passes).

Color values

HEX	#2B399B
RGB	rgb(43, 57, 155)
HSL	hsl(233, 57%, 39%)
HSV	hsv(233, 72%, 61%)
CMYK	cmyk(72.3%, 63.2%, 0%, 39.2%)
CIE-LAB	lab(28.92, 28.88, -55.09)
CIE-LCH	lch(28.92, 62.20, 297.66°)
OKLab	oklab(39.86% 0.0026 -0.1591)
OKLCH	oklch(39.86% 0.159 270.9)
XYZ	xyz(8.3738, 5.8056, 31.6833)
Luminance	0.0581 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B399B #9B8D2B

analogous

#2B719B #2B399B #552B9B

triadic

#2B399B #9B2B39 #399B2B

tetradic

#2B399B #9B2B71 #9B8D2B #2B9B55

square

#2B399B #9B2B71 #9B8D2B #2B9B55

split-complementary

#2B399B #9B552B #719B2B

monochromatic

#10163B #1E276B #2B399B #3B4CC9 #6B78D6

Accessibility & contrast

On white

9.72

#2B399B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#2B399B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B399B

9.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B399B	#FFFFFF	#000000	##FFFFFF
##2B399B	1.00	9.72	2.16	9.72
#FFFFFF	9.72	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499E

Deuteranopia (green-blind)

#003F99

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2b399b;
/* rgb */ color: rgb(43, 57, 155);
/* oklch */ color: oklch(39.9% 0.159 270.9);

Tailwind

colors: {
  custom: {
    50: '#746fb9',
    500: '#2b399b',
    950: '#000000',
  },
}

SCSS

$custom: #2b399b;
$custom-light: #746fb9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b399b",
  "rgb": {
    "r": 43,
    "g": 57,
    "b": 155
  },
  "hsl": {
    "h": 232.5,
    "s": 56.566,
    "l": 38.824
  },
  "oklch": {
    "l": 0.39863,
    "c": 0.15908,
    "h": 270.9
  },
  "luminance": 0.05806
}

Semantic roles & 50–950 ramp

primary

#2B399B

secondary

#BCB265

accent

#CD48E0

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #2B399B

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

Preview Lab → · Contrast checker → · Palette generator →