#2543A4#2543A4

#2543A4 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.3% C 0.161 H 266.3°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#2543A4
RGB	rgb(37, 67, 164)
HSL	hsl(226, 63%, 39%)
HSV	hsv(226, 77%, 64%)
CMYK	cmyk(77.4%, 59.1%, 0%, 35.7%)
CIE-LAB	lab(32.00, 24.87, -55.51)
CIE-LCH	lch(32.00, 60.83, 294.14°)
OKLab	oklab(42.31% -0.0103 -0.1603)
OKLCH	oklch(42.31% 0.161 266.3)
XYZ	xyz(9.4686, 7.0869, 35.9836)
Luminance	0.0709 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2543A4 #A48625

analogous

#2583A4 #2543A4 #4725A4

triadic

#2543A4 #A42543 #43A425

tetradic

#2543A4 #A42583 #A48625 #25A447

square

#2543A4 #A42583 #A48625 #25A447

split-complementary

#2543A4 #A44725 #83A425

monochromatic

#0E1A40 #1A2F72 #2543A4 #355AD1 #6783DD

Accessibility & contrast

On white

8.69

#2543A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#2543A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2543A4

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2543A4	#FFFFFF	#000000	##FFFFFF
##2543A4	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A7

Deuteranopia (green-blind)

#0046A2

Tritanopia (blue-blind)

#005B6D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2543a4;
/* rgb */ color: rgb(37, 67, 164);
/* oklch */ color: oklch(42.3% 0.161 266.3);

Tailwind

colors: {
  custom: {
    50: '#7476c0',
    500: '#2543a4',
    950: '#000000',
  },
}

SCSS

$custom: #2543a4;
$custom-light: #7476c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2543a4",
  "rgb": {
    "r": 37,
    "g": 67,
    "b": 164
  },
  "hsl": {
    "h": 225.827,
    "s": 63.184,
    "l": 39.412
  },
  "oklch": {
    "l": 0.42312,
    "c": 0.16063,
    "h": 266.3
  },
  "luminance": 0.07088
}

Semantic roles & 50–950 ramp

primary

#2543A4

secondary

#C2AC62

accent

#BF42E6

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #2543A4

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

Preview Lab → · Contrast checker → · Palette generator →