#2540A2#2540A2

#2540A2 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.5% C 0.162 H 267.1°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#2540A2
RGB	rgb(37, 64, 162)
HSL	hsl(227, 63%, 39%)
HSV	hsv(227, 77%, 64%)
CMYK	cmyk(77.2%, 60.5%, 0%, 36.5%)
CIE-LAB	lab(31.04, 26.12, -55.88)
CIE-LCH	lch(31.04, 61.68, 295.05°)
OKLab	oklab(41.54% -0.0082 -0.1614)
OKLCH	oklch(41.54% 0.162 267.1)
XYZ	xyz(9.1157, 6.6677, 34.9820)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2540A2 #A28725

analogous

#257FA2 #2540A2 #4925A2

triadic

#2540A2 #A22540 #40A225

tetradic

#2540A2 #A2257F #A28725 #25A249

square

#2540A2 #A2257F #A28725 #25A249

split-complementary

#2540A2 #A24925 #7FA225

monochromatic

#0E193E #1A2C70 #2540A2 #3456D1 #657FDC

Accessibility & contrast

On white

9.00

#2540A2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#2540A2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2540A2

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2540A2	#FFFFFF	#000000	##FFFFFF
##2540A2	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA5

Deuteranopia (green-blind)

#0043A0

Tritanopia (blue-blind)

#00596A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #2540a2;
/* rgb */ color: rgb(37, 64, 162);
/* oklch */ color: oklch(41.5% 0.162 267.1);

Tailwind

colors: {
  custom: {
    50: '#7374be',
    500: '#2540a2',
    950: '#000000',
  },
}

SCSS

$custom: #2540a2;
$custom-light: #7374be;
$custom-dark: #000000;

JSON

{
  "hex": "#2540a2",
  "rgb": {
    "r": 37,
    "g": 64,
    "b": 162
  },
  "hsl": {
    "h": 227.04,
    "s": 62.814,
    "l": 39.02
  },
  "oklch": {
    "l": 0.4154,
    "c": 0.16164,
    "h": 267.1
  },
  "luminance": 0.06669
}

Semantic roles & 50–950 ramp

primary

#2540A2

secondary

#C2AD61

accent

#C242E6

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #2540A2

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

Preview Lab → · Contrast checker → · Palette generator →