#2B40B4#2B40B4

#2B40B4 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.4% C 0.184 H 269.0°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#2B40B4
RGB	rgb(43, 64, 180)
HSL	hsl(231, 61%, 44%)
HSV	hsv(231, 76%, 71%)
CMYK	cmyk(76.1%, 64.4%, 0%, 29.4%)
CIE-LAB	lab(32.86, 33.52, -63.65)
CIE-LCH	lch(32.86, 71.94, 297.77°)
OKLab	oklab(43.45% -0.0031 -0.1841)
OKLCH	oklch(43.45% 0.184 269)
XYZ	xyz(11.0650, 7.4745, 44.0307)
Luminance	0.0748 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B40B4 #B49F2B

analogous

#2B84B4 #2B40B4 #5A2BB4

triadic

#2B40B4 #B42B40 #40B42B

tetradic

#2B40B4 #B42B84 #B49F2B #2BB45A

square

#2B40B4 #B42B84 #B49F2B #2BB45A

split-complementary

#2B40B4 #B45A2B #84B42B

monochromatic

#131D51 #1F2E83 #2B40B4 #495ED3 #7A8ADF

Accessibility & contrast

On white

8.42

#2B40B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#2B40B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B40B4

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B40B4	#FFFFFF	#000000	##FFFFFF
##2B40B4	1.00	8.42	2.50	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B8

Deuteranopia (green-blind)

#0047B2

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2b40b4;
/* rgb */ color: rgb(43, 64, 180);
/* oklch */ color: oklch(43.4% 0.184 269.0);

Tailwind

colors: {
  custom: {
    50: '#7a74cb',
    500: '#2b40b4',
    950: '#000000',
  },
}

SCSS

$custom: #2b40b4;
$custom-light: #7a74cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2b40b4",
  "rgb": {
    "r": 43,
    "g": 64,
    "b": 180
  },
  "hsl": {
    "h": 230.803,
    "s": 61.435,
    "l": 43.725
  },
  "oklch": {
    "l": 0.43446,
    "c": 0.18412,
    "h": 269
  },
  "luminance": 0.07476
}

Semantic roles & 50–950 ramp

primary

#2B40B4

secondary

#C7BB73

accent

#CC43E5

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2B40B4

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

Preview Lab → · Contrast checker → · Palette generator →