#2440B0#2440B0

#2440B0 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.181 H 267.1°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#2440B0
RGB	rgb(36, 64, 176)
HSL	hsl(228, 66%, 42%)
HSV	hsv(228, 80%, 69%)
CMYK	cmyk(79.5%, 63.6%, 0%, 31%)
CIE-LAB	lab(32.20, 31.34, -62.37)
CIE-LCH	lch(32.20, 69.80, 296.68°)
OKLab	oklab(42.77% -0.0091 -0.1805)
OKLCH	oklch(42.77% 0.181 267.1)
XYZ	xyz(10.3947, 7.1752, 41.9030)
Luminance	0.0718 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2440B0 #B09424

analogous

#2486B0 #2440B0 #4E24B0

triadic

#2440B0 #B02440 #40B024

tetradic

#2440B0 #B02486 #B09424 #24B04E

square

#2440B0 #B02486 #B09424 #24B04E

split-complementary

#2440B0 #B04E24 #86B024

monochromatic

#0F1B4A #1A2E7D #2440B0 #3A5AD7 #6D84E1

Accessibility & contrast

On white

8.62

#2440B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#2440B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2440B0

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2440B0	#FFFFFF	#000000	##FFFFFF
##2440B0	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B4

Deuteranopia (green-blind)

#0045AE

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2440b0;
/* rgb */ color: rgb(36, 64, 176);
/* oklch */ color: oklch(42.8% 0.181 267.1);

Tailwind

colors: {
  custom: {
    50: '#7774c9',
    500: '#2440b0',
    950: '#000000',
  },
}

SCSS

$custom: #2440b0;
$custom-light: #7774c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2440b0",
  "rgb": {
    "r": 36,
    "g": 64,
    "b": 176
  },
  "hsl": {
    "h": 228,
    "s": 66.038,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42765,
    "c": 0.1807,
    "h": 267.1
  },
  "luminance": 0.07176
}

Semantic roles & 50–950 ramp

primary

#2440B0

secondary

#C8B468

accent

#C73FE9

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2440B0

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

Preview Lab → · Contrast checker → · Palette generator →