#2C40B3#2C40B3

#2C40B3 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.4% C 0.183 H 269.3°. Best body text is #FFFFFF at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#2C40B3
RGB	rgb(44, 64, 179)
HSL	hsl(231, 61%, 44%)
HSV	hsv(231, 75%, 70%)
CMYK	cmyk(75.4%, 64.2%, 0%, 29.8%)
CIE-LAB	lab(32.82, 33.26, -63.12)
CIE-LCH	lch(32.82, 71.35, 297.79°)
OKLab	oklab(43.4% -0.0021 -0.1825)
OKLCH	oklch(43.4% 0.183 269.3)
XYZ	xyz(11.0060, 7.4557, 43.4981)
Luminance	0.0746 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2C40B3 #B39F2C

analogous

#2C83B3 #2C40B3 #5B2CB3

triadic

#2C40B3 #B32C40 #40B32C

tetradic

#2C40B3 #B32C83 #B39F2C #2CB35B

square

#2C40B3 #B32C83 #B39F2C #2CB35B

split-complementary

#2C40B3 #B35B2C #83B32C

monochromatic

#141D51 #202E82 #2C40B3 #4A5ED2 #7B8ADF

Accessibility & contrast

On white

8.43

#2C40B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#2C40B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2C40B3

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2C40B3	#FFFFFF	#000000	##FFFFFF
##2C40B3	1.00	8.43	2.49	8.43
#FFFFFF	8.43	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.43	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: #2c40b3;
/* rgb */ color: rgb(44, 64, 179);
/* oklch */ color: oklch(43.4% 0.183 269.3);

Tailwind

colors: {
  custom: {
    50: '#7a74cb',
    500: '#2c40b3',
    950: '#000000',
  },
}

SCSS

$custom: #2c40b3;
$custom-light: #7a74cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2c40b3",
  "rgb": {
    "r": 44,
    "g": 64,
    "b": 179
  },
  "hsl": {
    "h": 231.111,
    "s": 60.538,
    "l": 43.725
  },
  "oklch": {
    "l": 0.43401,
    "c": 0.18253,
    "h": 269.3
  },
  "luminance": 0.07457
}

Semantic roles & 50–950 ramp

primary

#2C40B3

secondary

#C7BB74

accent

#CC44E4

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2C40B3

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

Preview Lab → · Contrast checker → · Palette generator →