#2B3681#2B3681

#2B3681 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.0% C 0.126 H 272.4°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#2B3681
RGB	rgb(43, 54, 129)
HSL	hsl(232, 50%, 34%)
HSV	hsv(232, 67%, 51%)
CMYK	cmyk(66.7%, 58.1%, 0%, 49.4%)
CIE-LAB	lab(25.97, 21.19, -43.83)
CIE-LCH	lch(25.97, 48.68, 295.81°)
OKLab	oklab(37% 0.0053 -0.126)
OKLCH	oklch(37% 0.126 272.4)
XYZ	xyz(6.2766, 4.7364, 21.3481)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3681 #81762B

analogous

#2B6181 #2B3681 #4B2B81

triadic

#2B3681 #812B36 #36812B

tetradic

#2B3681 #812B61 #81762B #2B814B

square

#2B3681 #812B61 #81762B #2B814B

split-complementary

#2B3681 #814B2B #61812B

monochromatic

#0C1025 #1C2353 #2B3681 #3A49AF #5D6BC9

Accessibility & contrast

On white

10.78

#2B3681 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#2B3681 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3681

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3681	#FFFFFF	#000000	##FFFFFF
##2B3681	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004184

Deuteranopia (green-blind)

#003A7F

Tritanopia (blue-blind)

#004856

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #2b3681;
/* rgb */ color: rgb(43, 54, 129);
/* oklch */ color: oklch(37.0% 0.126 272.4);

Tailwind

colors: {
  custom: {
    50: '#6f6ca6',
    500: '#2b3681',
    950: '#000000',
  },
}

SCSS

$custom: #2b3681;
$custom-light: #6f6ca6;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3681",
  "rgb": {
    "r": 43,
    "g": 54,
    "b": 129
  },
  "hsl": {
    "h": 232.326,
    "s": 50,
    "l": 33.725
  },
  "oklch": {
    "l": 0.37003,
    "c": 0.12612,
    "h": 272.4
  },
  "luminance": 0.04737
}

Semantic roles & 50–950 ramp

primary

#2B3681

secondary

#AFA459

accent

#C84EDA

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08070F

muted

#7B7A7F

Preview Lab

Preview with #2B3681

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

Preview Lab → · Contrast checker → · Palette generator →