#2B40B5#2B40B5

#2B40B5 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.5% C 0.185 H 269.0°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#2B40B5
RGB	rgb(43, 64, 181)
HSL	hsl(231, 62%, 44%)
HSV	hsv(231, 76%, 71%)
CMYK	cmyk(76.2%, 64.6%, 0%, 29%)
CIE-LAB	lab(32.95, 33.89, -64.10)
CIE-LCH	lch(32.95, 72.50, 297.87°)
OKLab	oklab(43.54% -0.0031 -0.1854)
OKLCH	oklch(43.54% 0.185 269)
XYZ	xyz(11.1673, 7.5154, 44.5692)
Luminance	0.0752 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B40B5 #B5A02B

analogous

#2B85B5 #2B40B5 #5B2BB5

triadic

#2B40B5 #B52B40 #40B52B

tetradic

#2B40B5 #B52B85 #B5A02B #2BB55B

square

#2B40B5 #B52B85 #B5A02B #2BB55B

split-complementary

#2B40B5 #B55B2B #85B52B

monochromatic

#141D52 #1F2F84 #2B40B5 #495ED4 #7B8AE0

Accessibility & contrast

On white

8.39

#2B40B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#2B40B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B40B5

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B40B5	#FFFFFF	#000000	##FFFFFF
##2B40B5	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B9

Deuteranopia (green-blind)

#0047B3

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2b40b5;
/* rgb */ color: rgb(43, 64, 181);
/* oklch */ color: oklch(43.5% 0.185 269.0);

Tailwind

colors: {
  custom: {
    50: '#7a74cc',
    500: '#2b40b5',
    950: '#000000',
  },
}

SCSS

$custom: #2b40b5;
$custom-light: #7a74cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2b40b5",
  "rgb": {
    "r": 43,
    "g": 64,
    "b": 181
  },
  "hsl": {
    "h": 230.87,
    "s": 61.607,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43538,
    "c": 0.18542,
    "h": 269
  },
  "luminance": 0.07517
}

Semantic roles & 50–950 ramp

primary

#2B40B5

secondary

#C8BB74

accent

#CC43E5

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2B40B5

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

Preview Lab → · Contrast checker → · Palette generator →