#2B40B7#2B40B7

#2B40B7 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.7% C 0.188 H 269.0°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#2B40B7
RGB	rgb(43, 64, 183)
HSL	hsl(231, 62%, 44%)
HSV	hsv(231, 77%, 72%)
CMYK	cmyk(76.5%, 65%, 0%, 28.2%)
CIE-LAB	lab(33.13, 34.62, -64.99)
CIE-LCH	lch(33.13, 73.63, 298.04°)
OKLab	oklab(43.72% -0.0032 -0.188)
OKLCH	oklch(43.72% 0.188 269)
XYZ	xyz(11.3740, 7.5980, 45.6577)
Luminance	0.0760 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.91

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B40B7 #B7A22B

analogous

#2B86B7 #2B40B7 #5C2BB7

triadic

#2B40B7 #B72B40 #40B72B

tetradic

#2B40B7 #B72B86 #B7A22B #2BB75C

square

#2B40B7 #B72B86 #B7A22B #2BB75C

split-complementary

#2B40B7 #B75C2B #86B72B

monochromatic

#141D54 #1F2F85 #2B40B7 #4B5FD5 #7C8BE0

Accessibility & contrast

On white

8.33

#2B40B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#2B40B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B40B7

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B40B7	#FFFFFF	#000000	##FFFFFF
##2B40B7	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BB

Deuteranopia (green-blind)

#0047B5

Tritanopia (blue-blind)

#006075

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2b40b7;
/* rgb */ color: rgb(43, 64, 183);
/* oklch */ color: oklch(43.7% 0.188 269.0);

Tailwind

colors: {
  custom: {
    50: '#7b75ce',
    500: '#2b40b7',
    950: '#000000',
  },
}

SCSS

$custom: #2b40b7;
$custom-light: #7b75ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2b40b7",
  "rgb": {
    "r": 43,
    "g": 64,
    "b": 183
  },
  "hsl": {
    "h": 231,
    "s": 61.947,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43724,
    "c": 0.18803,
    "h": 269
  },
  "luminance": 0.07599
}

Semantic roles & 50–950 ramp

primary

#2B40B7

secondary

#C9BC75

accent

#CD43E5

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2B40B7

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

Preview Lab → · Contrast checker → · Palette generator →