#2B40B0#2B40B0

#2B40B0 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.1% C 0.179 H 269.1°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#2B40B0
RGB	rgb(43, 64, 176)
HSL	hsl(231, 61%, 43%)
HSV	hsv(231, 76%, 69%)
CMYK	cmyk(75.6%, 63.6%, 0%, 31%)
CIE-LAB	lab(32.51, 32.05, -61.85)
CIE-LCH	lch(32.51, 69.66, 297.39°)
OKLab	oklab(43.08% -0.0029 -0.1788)
OKLCH	oklch(43.08% 0.179 269.1)
XYZ	xyz(10.6634, 7.3138, 41.9156)
Luminance	0.0732 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B40B0 #B09B2B

analogous

#2B83B0 #2B40B0 #582BB0

triadic

#2B40B0 #B02B40 #40B02B

tetradic

#2B40B0 #B02B83 #B09B2B #2BB058

square

#2B40B0 #B02B83 #B09B2B #2BB058

split-complementary

#2B40B0 #B0582B #83B02B

monochromatic

#131C4E #1F2E7F #2B40B0 #465CD2 #7888DE

Accessibility & contrast

On white

8.53

#2B40B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#2B40B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B40B0

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B40B0	#FFFFFF	#000000	##FFFFFF
##2B40B0	1.00	8.53	2.46	8.53
#FFFFFF	8.53	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B4

Deuteranopia (green-blind)

#0046AE

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2b40b0;
/* rgb */ color: rgb(43, 64, 176);
/* oklch */ color: oklch(43.1% 0.179 269.1);

Tailwind

colors: {
  custom: {
    50: '#7974c9',
    500: '#2b40b0',
    950: '#000000',
  },
}

SCSS

$custom: #2b40b0;
$custom-light: #7974c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2b40b0",
  "rgb": {
    "r": 43,
    "g": 64,
    "b": 176
  },
  "hsl": {
    "h": 230.526,
    "s": 60.731,
    "l": 42.941
  },
  "oklch": {
    "l": 0.43078,
    "c": 0.17884,
    "h": 269.1
  },
  "luminance": 0.07315
}

Semantic roles & 50–950 ramp

primary

#2B40B0

secondary

#C6B871

accent

#CB44E4

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2B40B0

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

Preview Lab → · Contrast checker → · Palette generator →