#2B3383#2B3383

#2B3383 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.6% C 0.133 H 273.5°. Best body text is #FFFFFF at 11.03:1 contrast (WCAG AA passes).

Color values

HEX	#2B3383
RGB	rgb(43, 51, 131)
HSL	hsl(235, 51%, 34%)
HSV	hsv(235, 67%, 51%)
CMYK	cmyk(67.2%, 61.1%, 0%, 48.6%)
CIE-LAB	lab(25.32, 23.99, -46.14)
CIE-LCH	lch(25.32, 52.00, 297.47°)
OKLab	oklab(36.57% 0.0081 -0.1328)
OKLCH	oklch(36.57% 0.133 273.5)
XYZ	xyz(6.2755, 4.5194, 22.0099)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3383 #837B2B

analogous

#2B5F83 #2B3383 #4F2B83

triadic

#2B3383 #832B33 #33832B

tetradic

#2B3383 #832B5F #837B2B #2B834F

square

#2B3383 #832B5F #837B2B #2B834F

split-complementary

#2B3383 #834F2B #5F832B

monochromatic

#0D0F27 #1C2155 #2B3383 #3A45B1 #5E68CA

Accessibility & contrast

On white

11.03

#2B3383 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#2B3383 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3383

11.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3383	#FFFFFF	#000000	##FFFFFF
##2B3383	1.00	11.03	1.90	11.03
#FFFFFF	11.03	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004086

Deuteranopia (green-blind)

#003881

Tritanopia (blue-blind)

#004756

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #2b3383;
/* rgb */ color: rgb(43, 51, 131);
/* oklch */ color: oklch(36.6% 0.133 273.5);

Tailwind

colors: {
  custom: {
    50: '#6f6aa8',
    500: '#2b3383',
    950: '#000000',
  },
}

SCSS

$custom: #2b3383;
$custom-light: #6f6aa8;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3383",
  "rgb": {
    "r": 43,
    "g": 51,
    "b": 131
  },
  "hsl": {
    "h": 234.545,
    "s": 50.575,
    "l": 34.118
  },
  "oklch": {
    "l": 0.3657,
    "c": 0.13309,
    "h": 273.5
  },
  "luminance": 0.0452
}

Semantic roles & 50–950 ramp

primary

#2B3383

secondary

#B0A85A

accent

#CD4EDA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #2B3383

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

Preview Lab → · Contrast checker → · Palette generator →