#243CAE#243CAE

#243CAE is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.183 H 267.9°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#243CAE
RGB	rgb(36, 60, 174)
HSL	hsl(230, 66%, 41%)
HSV	hsv(230, 79%, 68%)
CMYK	cmyk(79.3%, 65.5%, 0%, 31.8%)
CIE-LAB	lab(31.02, 33.20, -63.11)
CIE-LCH	lch(31.02, 71.31, 297.75°)
OKLab	oklab(41.84% -0.0068 -0.1827)
OKLCH	oklch(41.84% 0.183 267.9)
XYZ	xyz(9.9807, 6.6616, 40.7960)
Luminance	0.0666 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243CAE #AE9624

analogous

#2481AE #243CAE #5124AE

triadic

#243CAE #AE243C #3CAE24

tetradic

#243CAE #AE2481 #AE9624 #24AE51

square

#243CAE #AE2481 #AE9624 #24AE51

split-complementary

#243CAE #AE5124 #81AE24

monochromatic

#0F1949 #1A2B7B #243CAE #3954D6 #6C80E1

Accessibility & contrast

On white

9.00

#243CAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#243CAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243CAE

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243CAE	#FFFFFF	#000000	##FFFFFF
##243CAE	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)

#0050B2

Deuteranopia (green-blind)

#0043AC

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #243cae;
/* rgb */ color: rgb(36, 60, 174);
/* oklch */ color: oklch(41.8% 0.183 267.9);

Tailwind

colors: {
  custom: {
    50: '#7671c7',
    500: '#243cae',
    950: '#000000',
  },
}

SCSS

$custom: #243cae;
$custom-light: #7671c7;
$custom-dark: #000000;

JSON

{
  "hex": "#243cae",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 174
  },
  "hsl": {
    "h": 229.565,
    "s": 65.714,
    "l": 41.176
  },
  "oklch": {
    "l": 0.41842,
    "c": 0.1828,
    "h": 267.9
  },
  "luminance": 0.06663
}

Semantic roles & 50–950 ramp

primary

#243CAE

secondary

#C7B667

accent

#CB3FE9

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #243CAE

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

Preview Lab → · Contrast checker → · Palette generator →