#2B43B1#2B43B1

#2B43B1 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.7% C 0.177 H 268.4°. Best body text is #FFFFFF at 8.27:1 contrast (WCAG AA passes).

Color values

HEX	#2B43B1
RGB	rgb(43, 67, 177)
HSL	hsl(229, 61%, 43%)
HSV	hsv(229, 76%, 69%)
CMYK	cmyk(75.7%, 62.1%, 0%, 30.6%)
CIE-LAB	lab(33.35, 30.47, -61.07)
CIE-LCH	lch(33.35, 68.25, 296.51°)
OKLab	oklab(43.73% -0.0049 -0.1765)
OKLCH	oklch(43.73% 0.177 268.4)
XYZ	xyz(10.9365, 7.7010, 42.4965)
Luminance	0.0770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B43B1 #B1992B

analogous

#2B86B1 #2B43B1 #562BB1

triadic

#2B43B1 #B12B43 #43B12B

tetradic

#2B43B1 #B12B86 #B1992B #2BB156

square

#2B43B1 #B12B86 #B1992B #2BB156

split-complementary

#2B43B1 #B1562B #86B12B

monochromatic

#131E4F #1F3080 #2B43B1 #4760D2 #788ADE

Accessibility & contrast

On white

8.27

#2B43B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#2B43B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B43B1

8.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B43B1	#FFFFFF	#000000	##FFFFFF
##2B43B1	1.00	8.27	2.54	8.27
#FFFFFF	8.27	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B5

Deuteranopia (green-blind)

#0048AF

Tritanopia (blue-blind)

#005F73

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2b43b1;
/* rgb */ color: rgb(43, 67, 177);
/* oklch */ color: oklch(43.7% 0.177 268.4);

Tailwind

colors: {
  custom: {
    50: '#7977c9',
    500: '#2b43b1',
    950: '#000000',
  },
}

SCSS

$custom: #2b43b1;
$custom-light: #7977c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b43b1",
  "rgb": {
    "r": 43,
    "g": 67,
    "b": 177
  },
  "hsl": {
    "h": 229.254,
    "s": 60.909,
    "l": 43.137
  },
  "oklch": {
    "l": 0.43726,
    "c": 0.17656,
    "h": 268.4
  },
  "luminance": 0.07702
}

Semantic roles & 50–950 ramp

primary

#2B43B1

secondary

#C6B772

accent

#C744E4

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2B43B1

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

Preview Lab → · Contrast checker → · Palette generator →