#2B3391#2B3391

#2B3391 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.8% C 0.153 H 272.9°. Best body text is #FFFFFF at 10.58:1 contrast (WCAG AA passes).

Color values

HEX	#2B3391
RGB	rgb(43, 51, 145)
HSL	hsl(235, 54%, 37%)
HSV	hsv(235, 70%, 57%)
CMYK	cmyk(70.3%, 64.8%, 0%, 43.1%)
CIE-LAB	lab(26.52, 29.16, -52.88)
CIE-LCH	lch(26.52, 60.38, 298.87°)
OKLab	oklab(37.83% 0.0076 -0.1526)
OKLCH	oklch(37.83% 0.153 272.9)
XYZ	xyz(7.2892, 4.9249, 27.3490)
Luminance	0.0493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3391 #91892B

analogous

#2B6691 #2B3391 #562B91

triadic

#2B3391 #912B33 #33912B

tetradic

#2B3391 #912B66 #91892B #2B9156

square

#2B3391 #912B66 #91892B #2B9156

split-complementary

#2B3391 #91562B #66912B

monochromatic

#0F1233 #1D2262 #2B3391 #3944C0 #656ED1

Accessibility & contrast

On white

10.58

#2B3391 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#2B3391 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3391

10.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3391	#FFFFFF	#000000	##FFFFFF
##2B3391	1.00	10.58	1.99	10.58
#FFFFFF	10.58	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004394

Deuteranopia (green-blind)

#003A8F

Tritanopia (blue-blind)

#004B5D

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #2b3391;
/* rgb */ color: rgb(43, 51, 145);
/* oklch */ color: oklch(37.8% 0.153 272.9);

Tailwind

colors: {
  custom: {
    50: '#736ab2',
    500: '#2b3391',
    950: '#000000',
  },
}

SCSS

$custom: #2b3391;
$custom-light: #736ab2;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3391",
  "rgb": {
    "r": 43,
    "g": 51,
    "b": 145
  },
  "hsl": {
    "h": 235.294,
    "s": 54.255,
    "l": 36.863
  },
  "oklch": {
    "l": 0.37829,
    "c": 0.15282,
    "h": 272.9
  },
  "luminance": 0.04926
}

Semantic roles & 50–950 ramp

primary

#2B3391

secondary

#B8B160

accent

#D24ADE

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090611

muted

#7B7A80

Preview Lab

Preview with #2B3391

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

Preview Lab → · Contrast checker → · Palette generator →