#2543A9#2543A9

#2543A9 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.7% C 0.167 H 266.5°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#2543A9
RGB	rgb(37, 67, 169)
HSL	hsl(226, 64%, 40%)
HSV	hsv(226, 78%, 66%)
CMYK	cmyk(78.1%, 60.4%, 0%, 33.7%)
CIE-LAB	lab(32.42, 26.79, -57.84)
CIE-LCH	lch(32.42, 63.74, 294.85°)
OKLab	oklab(42.75% -0.0101 -0.1671)
OKLCH	oklch(42.75% 0.167 266.5)
XYZ	xyz(9.9290, 7.2711, 38.4086)
Luminance	0.0727 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2543A9 #A98B25

analogous

#2585A9 #2543A9 #4925A9

triadic

#2543A9 #A92543 #43A925

tetradic

#2543A9 #A92585 #A98B25 #25A949

square

#2543A9 #A92585 #A98B25 #25A949

split-complementary

#2543A9 #A94925 #85A925

monochromatic

#0F1B45 #1A2F77 #2543A9 #385BD3 #6A84DE

Accessibility & contrast

On white

8.56

#2543A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#2543A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2543A9

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2543A9	#FFFFFF	#000000	##FFFFFF
##2543A9	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AC

Deuteranopia (green-blind)

#0046A7

Tritanopia (blue-blind)

#005D6F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2543a9;
/* rgb */ color: rgb(37, 67, 169);
/* oklch */ color: oklch(42.7% 0.167 266.5);

Tailwind

colors: {
  custom: {
    50: '#7576c3',
    500: '#2543a9',
    950: '#000000',
  },
}

SCSS

$custom: #2543a9;
$custom-light: #7576c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2543a9",
  "rgb": {
    "r": 37,
    "g": 67,
    "b": 169
  },
  "hsl": {
    "h": 226.364,
    "s": 64.078,
    "l": 40.392
  },
  "oklch": {
    "l": 0.42749,
    "c": 0.16744,
    "h": 266.5
  },
  "luminance": 0.07272
}

Semantic roles & 50–950 ramp

primary

#2543A9

secondary

#C4AF65

accent

#C141E7

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2543A9

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

Preview Lab → · Contrast checker → · Palette generator →