#2B40B1#2B40B1

#2B40B1 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.2% C 0.180 H 269.1°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#2B40B1
RGB	rgb(43, 64, 177)
HSL	hsl(231, 61%, 43%)
HSV	hsv(231, 76%, 69%)
CMYK	cmyk(75.7%, 63.8%, 0%, 30.6%)
CIE-LAB	lab(32.60, 32.42, -62.30)
CIE-LCH	lch(32.60, 70.23, 297.49°)
OKLab	oklab(43.17% -0.0029 -0.1801)
OKLCH	oklch(43.17% 0.18 269.1)
XYZ	xyz(10.7627, 7.3535, 42.4386)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B40B1 #B19C2B

analogous

#2B83B1 #2B40B1 #592BB1

triadic

#2B40B1 #B12B40 #40B12B

tetradic

#2B40B1 #B12B83 #B19C2B #2BB159

square

#2B40B1 #B12B83 #B19C2B #2BB159

split-complementary

#2B40B1 #B1592B #83B12B

monochromatic

#131C4F #1F2E80 #2B40B1 #475DD2 #7888DE

Accessibility & contrast

On white

8.50

#2B40B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#2B40B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B40B1

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B40B1	#FFFFFF	#000000	##FFFFFF
##2B40B1	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B5

Deuteranopia (green-blind)

#0046AF

Tritanopia (blue-blind)

#005E72

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2b40b1;
/* rgb */ color: rgb(43, 64, 177);
/* oklch */ color: oklch(43.2% 0.180 269.1);

Tailwind

colors: {
  custom: {
    50: '#7974c9',
    500: '#2b40b1',
    950: '#000000',
  },
}

SCSS

$custom: #2b40b1;
$custom-light: #7974c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b40b1",
  "rgb": {
    "r": 43,
    "g": 64,
    "b": 177
  },
  "hsl": {
    "h": 230.597,
    "s": 60.909,
    "l": 43.137
  },
  "oklch": {
    "l": 0.43169,
    "c": 0.18016,
    "h": 269.1
  },
  "luminance": 0.07355
}

Semantic roles & 50–950 ramp

primary

#2B40B1

secondary

#C6B972

accent

#CB44E4

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2B40B1

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

Preview Lab → · Contrast checker → · Palette generator →