#2543A5#2543A5

#2543A5 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.4% C 0.162 H 266.4°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#2543A5
RGB	rgb(37, 67, 165)
HSL	hsl(226, 63%, 40%)
HSV	hsv(226, 78%, 65%)
CMYK	cmyk(77.6%, 59.4%, 0%, 35.3%)
CIE-LAB	lab(32.09, 25.26, -55.98)
CIE-LCH	lch(32.09, 61.41, 294.28°)
OKLab	oklab(42.4% -0.0102 -0.1617)
OKLCH	oklch(42.4% 0.162 266.4)
XYZ	xyz(9.5593, 7.1232, 36.4611)
Luminance	0.0712 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2543A5 #A58725

analogous

#2583A5 #2543A5 #4725A5

triadic

#2543A5 #A52543 #43A525

tetradic

#2543A5 #A52583 #A58725 #25A547

square

#2543A5 #A52583 #A58725 #25A547

split-complementary

#2543A5 #A54725 #83A525

monochromatic

#0F1A41 #1A2F73 #2543A5 #355AD2 #6783DD

Accessibility & contrast

On white

8.66

#2543A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#2543A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2543A5

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2543A5	#FFFFFF	#000000	##FFFFFF
##2543A5	1.00	8.66	2.42	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A8

Deuteranopia (green-blind)

#0046A3

Tritanopia (blue-blind)

#005C6D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2543a5;
/* rgb */ color: rgb(37, 67, 165);
/* oklch */ color: oklch(42.4% 0.162 266.4);

Tailwind

colors: {
  custom: {
    50: '#7476c0',
    500: '#2543a5',
    950: '#000000',
  },
}

SCSS

$custom: #2543a5;
$custom-light: #7476c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2543a5",
  "rgb": {
    "r": 37,
    "g": 67,
    "b": 165
  },
  "hsl": {
    "h": 225.938,
    "s": 63.366,
    "l": 39.608
  },
  "oklch": {
    "l": 0.42399,
    "c": 0.16199,
    "h": 266.4
  },
  "luminance": 0.07124
}

Semantic roles & 50–950 ramp

primary

#2543A5

secondary

#C3AC63

accent

#C041E6

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #2543A5

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

Preview Lab → · Contrast checker → · Palette generator →