#2B3781#2B3781

#2B3781 is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.2% C 0.125 H 272.0°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#2B3781
RGB	rgb(43, 55, 129)
HSL	hsl(232, 50%, 34%)
HSV	hsv(232, 67%, 51%)
CMYK	cmyk(66.7%, 57.4%, 0%, 49.4%)
CIE-LAB	lab(26.25, 20.51, -43.38)
CIE-LCH	lch(26.25, 47.98, 295.30°)
OKLab	oklab(37.21% 0.0043 -0.1247)
OKLCH	oklch(37.21% 0.125 272)
XYZ	xyz(6.3236, 4.8304, 21.3637)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3781 #81752B

analogous

#2B6281 #2B3781 #4A2B81

triadic

#2B3781 #812B37 #37812B

tetradic

#2B3781 #812B62 #81752B #2B814A

square

#2B3781 #812B62 #81752B #2B814A

split-complementary

#2B3781 #814A2B #62812B

monochromatic

#0C1025 #1C2353 #2B3781 #3A4BAF #5D6CC9

Accessibility & contrast

On white

10.68

#2B3781 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#2B3781 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3781

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3781	#FFFFFF	#000000	##FFFFFF
##2B3781	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004284

Deuteranopia (green-blind)

#003A80

Tritanopia (blue-blind)

#004956

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #2b3781;
/* rgb */ color: rgb(43, 55, 129);
/* oklch */ color: oklch(37.2% 0.125 272.0);

Tailwind

colors: {
  custom: {
    50: '#6f6da6',
    500: '#2b3781',
    950: '#000000',
  },
}

SCSS

$custom: #2b3781;
$custom-light: #6f6da6;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3781",
  "rgb": {
    "r": 43,
    "g": 55,
    "b": 129
  },
  "hsl": {
    "h": 231.628,
    "s": 50,
    "l": 33.725
  },
  "oklch": {
    "l": 0.3721,
    "c": 0.12475,
    "h": 272
  },
  "luminance": 0.04831
}

Semantic roles & 50–950 ramp

primary

#2B3781

secondary

#AFA359

accent

#C64EDA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #2B3781

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

Preview Lab → · Contrast checker → · Palette generator →