#2543BC#2543BC

#2543BC is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.5% C 0.193 H 266.9°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#2543BC
RGB	rgb(37, 67, 188)
HSL	hsl(228, 67%, 44%)
HSV	hsv(228, 80%, 74%)
CMYK	cmyk(80.3%, 64.4%, 0%, 26.3%)
CIE-LAB	lab(34.06, 33.97, -66.43)
CIE-LCH	lch(34.06, 74.61, 297.08°)
OKLab	oklab(44.47% -0.0103 -0.1923)
OKLCH	oklch(44.47% 0.193 266.9)
XYZ	xyz(11.8440, 8.0371, 48.4943)
Luminance	0.0804 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2543BC #BC9E25

analogous

#258FBC #2543BC #5225BC

triadic

#2543BC #BC2543 #43BC25

tetradic

#2543BC #BC258F #BC9E25 #25BC52

square

#2543BC #BC258F #BC9E25 #25BC52

split-complementary

#2543BC #BC5225 #8FBC25

monochromatic

#111F56 #1B3189 #2543BC #4462DA #778DE4

Accessibility & contrast

On white

8.05

#2543BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#2543BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2543BC

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2543BC	#FFFFFF	#000000	##FFFFFF
##2543BC	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)

#0057C0

Deuteranopia (green-blind)

#0049BA

Tritanopia (blue-blind)

#006379

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #2543bc;
/* rgb */ color: rgb(37, 67, 188);
/* oklch */ color: oklch(44.5% 0.193 266.9);

Tailwind

colors: {
  custom: {
    50: '#7a77d1',
    500: '#2543bc',
    950: '#000000',
  },
}

SCSS

$custom: #2543bc;
$custom-light: #7a77d1;
$custom-dark: #000000;

JSON

{
  "hex": "#2543bc",
  "rgb": {
    "r": 37,
    "g": 67,
    "b": 188
  },
  "hsl": {
    "h": 228.079,
    "s": 67.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.44474,
    "c": 0.19256,
    "h": 266.9
  },
  "luminance": 0.08038
}

Semantic roles & 50–950 ramp

primary

#2543BC

secondary

#CCBA71

accent

#C83EEA

background

#F8F7FD

surface

#EFEDFA

border

#CAC8D3

text

#0B0814

muted

#7C7B83

Preview Lab

Preview with #2543BC

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

Preview Lab → · Contrast checker → · Palette generator →