#2B399C#2B399C

#2B399C is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.0% C 0.160 H 270.9°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#2B399C
RGB	rgb(43, 57, 156)
HSL	hsl(233, 57%, 39%)
HSV	hsv(233, 72%, 61%)
CMYK	cmyk(72.4%, 63.5%, 0%, 38.8%)
CIE-LAB	lab(29.00, 29.25, -55.56)
CIE-LCH	lch(29.00, 62.78, 297.76°)
OKLab	oklab(39.95% 0.0026 -0.1604)
OKLCH	oklch(39.95% 0.16 270.9)
XYZ	xyz(8.4581, 5.8393, 32.1274)
Luminance	0.0584 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B399C #9C8E2B

analogous

#2B729C #2B399C #562B9C

triadic

#2B399C #9C2B39 #399C2B

tetradic

#2B399C #9C2B72 #9C8E2B #2B9C56

square

#2B399C #9C2B72 #9C8E2B #2B9C56

split-complementary

#2B399C #9C562B #729C2B

monochromatic

#11163C #1E276C #2B399C #3B4DC9 #6B78D6

Accessibility & contrast

On white

9.69

#2B399C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#2B399C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B399C

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B399C	#FFFFFF	#000000	##FFFFFF
##2B399C	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9F

Deuteranopia (green-blind)

#003F9A

Tritanopia (blue-blind)

#005265

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2b399c;
/* rgb */ color: rgb(43, 57, 156);
/* oklch */ color: oklch(40.0% 0.160 270.9);

Tailwind

colors: {
  custom: {
    50: '#756fba',
    500: '#2b399c',
    950: '#000000',
  },
}

SCSS

$custom: #2b399c;
$custom-light: #756fba;
$custom-dark: #000000;

JSON

{
  "hex": "#2b399c",
  "rgb": {
    "r": 43,
    "g": 57,
    "b": 156
  },
  "hsl": {
    "h": 232.566,
    "s": 56.784,
    "l": 39.02
  },
  "oklch": {
    "l": 0.39954,
    "c": 0.16045,
    "h": 270.9
  },
  "luminance": 0.0584
}

Semantic roles & 50–950 ramp

primary

#2B399C

secondary

#BDB266

accent

#CD48E0

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #2B399C

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

Preview Lab → · Contrast checker → · Palette generator →