#2540C4#2540C4

#2540C4 is a dark, highly saturated blue. Relative luminance 0.080; OKLCH L 44.7% C 0.206 H 267.4°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#2540C4
RGB	rgb(37, 64, 196)
HSL	hsl(230, 68%, 46%)
HSV	hsv(230, 81%, 77%)
CMYK	cmyk(81.1%, 67.3%, 0%, 23.1%)
CIE-LAB	lab(34.07, 38.81, -71.09)
CIE-LCH	lch(34.07, 81.00, 298.63°)
OKLab	oklab(44.71% -0.0092 -0.2059)
OKLCH	oklch(44.71% 0.206 267.4)
XYZ	xyz(12.5567, 8.0441, 53.1047)
Luminance	0.0805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2540C4 #C4A925

analogous

#258FC4 #2540C4 #5925C4

triadic

#2540C4 #C42540 #40C425

tetradic

#2540C4 #C4258F #C4A925 #25C459

square

#2540C4 #C4258F #C4A925 #25C459

split-complementary

#2540C4 #C45925 #8FC425

monochromatic

#121E5D #1B2F91 #2540C4 #4962DD #7D8FE6

Accessibility & contrast

On white

8.05

#2540C4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#2540C4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2540C4

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2540C4	#FFFFFF	#000000	##FFFFFF
##2540C4	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058C8

Deuteranopia (green-blind)

#0049C2

Tritanopia (blue-blind)

#00647C

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #2540c4;
/* rgb */ color: rgb(37, 64, 196);
/* oklch */ color: oklch(44.7% 0.206 267.4);

Tailwind

colors: {
  custom: {
    50: '#7c75d7',
    500: '#2540c4',
    950: '#000000',
  },
}

SCSS

$custom: #2540c4;
$custom-light: #7c75d7;
$custom-dark: #000000;

JSON

{
  "hex": "#2540c4",
  "rgb": {
    "r": 37,
    "g": 64,
    "b": 196
  },
  "hsl": {
    "h": 229.811,
    "s": 68.24,
    "l": 45.686
  },
  "oklch": {
    "l": 0.44709,
    "c": 0.20615,
    "h": 267.4
  },
  "luminance": 0.08046
}

Semantic roles & 50–950 ramp

primary

#2540C4

secondary

#CFC076

accent

#CD3DEB

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0B0815

muted

#7C7B83

Preview Lab

Preview with #2540C4

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

Preview Lab → · Contrast checker → · Palette generator →