#2B40B3#2B40B3

#2B40B3 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.183 H 269.1°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#2B40B3
RGB	rgb(43, 64, 179)
HSL	hsl(231, 61%, 44%)
HSV	hsv(231, 76%, 70%)
CMYK	cmyk(76%, 64.2%, 0%, 29.8%)
CIE-LAB	lab(32.77, 33.16, -63.20)
CIE-LCH	lch(32.77, 71.37, 297.68°)
OKLab	oklab(43.35% -0.003 -0.1828)
OKLCH	oklch(43.35% 0.183 269.1)
XYZ	xyz(10.9635, 7.4339, 43.4962)
Luminance	0.0743 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B40B3 #B39E2B

analogous

#2B84B3 #2B40B3 #5A2BB3

triadic

#2B40B3 #B32B40 #40B32B

tetradic

#2B40B3 #B32B84 #B39E2B #2BB35A

square

#2B40B3 #B32B84 #B39E2B #2BB35A

split-complementary

#2B40B3 #B35A2B #84B32B

monochromatic

#131D50 #1F2E82 #2B40B3 #485ED3 #7989DF

Accessibility & contrast

On white

8.44

#2B40B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#2B40B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B40B3

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B40B3	#FFFFFF	#000000	##FFFFFF
##2B40B3	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B7

Deuteranopia (green-blind)

#0047B1

Tritanopia (blue-blind)

#005E73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2b40b3;
/* rgb */ color: rgb(43, 64, 179);
/* oklch */ color: oklch(43.4% 0.183 269.1);

Tailwind

colors: {
  custom: {
    50: '#7a74cb',
    500: '#2b40b3',
    950: '#000000',
  },
}

SCSS

$custom: #2b40b3;
$custom-light: #7a74cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2b40b3",
  "rgb": {
    "r": 43,
    "g": 64,
    "b": 179
  },
  "hsl": {
    "h": 230.735,
    "s": 61.261,
    "l": 43.529
  },
  "oklch": {
    "l": 0.43353,
    "c": 0.1828,
    "h": 269.1
  },
  "luminance": 0.07435
}

Semantic roles & 50–950 ramp

primary

#2B40B3

secondary

#C7BA73

accent

#CC43E4

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2B40B3

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

Preview Lab → · Contrast checker → · Palette generator →