#243CA0#243CA0

#243CA0 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.5% C 0.164 H 267.8°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#243CA0
RGB	rgb(36, 60, 160)
HSL	hsl(228, 63%, 38%)
HSV	hsv(228, 78%, 63%)
CMYK	cmyk(77.5%, 62.5%, 0%, 37.3%)
CIE-LAB	lab(29.77, 27.92, -56.74)
CIE-LCH	lch(29.77, 63.24, 296.20°)
OKLab	oklab(40.53% -0.0064 -0.164)
OKLCH	oklch(40.53% 0.164 267.8)
XYZ	xyz(8.6864, 6.1439, 33.9790)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243CA0 #A08824

analogous

#247AA0 #243CA0 #4A24A0

triadic

#243CA0 #A0243C #3CA024

tetradic

#243CA0 #A0247A #A08824 #24A04A

square

#243CA0 #A0247A #A08824 #24A04A

split-complementary

#243CA0 #A04A24 #7AA024

monochromatic

#0E173C #19296E #243CA0 #3150D1 #637ADC

Accessibility & contrast

On white

9.42

#243CA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#243CA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243CA0

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243CA0	#FFFFFF	#000000	##FFFFFF
##243CA0	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA3

Deuteranopia (green-blind)

#00409E

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #243ca0;
/* rgb */ color: rgb(36, 60, 160);
/* oklch */ color: oklch(40.5% 0.164 267.8);

Tailwind

colors: {
  custom: {
    50: '#7371bd',
    500: '#243ca0',
    950: '#000000',
  },
}

SCSS

$custom: #243ca0;
$custom-light: #7371bd;
$custom-dark: #000000;

JSON

{
  "hex": "#243ca0",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 160
  },
  "hsl": {
    "h": 228.387,
    "s": 63.265,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40535,
    "c": 0.16415,
    "h": 267.8
  },
  "luminance": 0.06145
}

Semantic roles & 50–950 ramp

primary

#243CA0

secondary

#C1AE5F

accent

#C641E6

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #243CA0

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

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