#243A66#243A66

#243A66 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.4% C 0.082 H 262.9°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#243A66
RGB	rgb(36, 58, 102)
HSL	hsl(220, 48%, 27%)
HSV	hsv(220, 65%, 40%)
CMYK	cmyk(64.7%, 43.1%, 0%, 60%)
CIE-LAB	lab(24.83, 6.73, -28.50)
CIE-LCH	lch(24.83, 29.29, 283.29°)
OKLab	oklab(35.42% -0.0102 -0.0811)
OKLCH	oklch(35.42% 0.082 262.9)
XYZ	xyz(4.6381, 4.3601, 13.1650)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A66 #665024

analogous

#245B66 #243A66 #2F2466

triadic

#243A66 #66243A #3A6624

tetradic

#243A66 #66245B #665024 #24662F

square

#243A66 #66245B #665024 #24662F

split-complementary

#243A66 #662F24 #5B6624

monochromatic

#080D17 #142039 #243A66 #345493 #476EBE

Accessibility & contrast

On white

11.22

#243A66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#243A66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A66

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A66	#FFFFFF	#000000	##FFFFFF
##243A66	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273E68

Deuteranopia (green-blind)

#1D3865

Tritanopia (blue-blind)

#00444B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #243a66;
/* rgb */ color: rgb(36, 58, 102);
/* oklch */ color: oklch(35.4% 0.082 262.9);

Tailwind

colors: {
  custom: {
    50: '#666f92',
    500: '#243a66',
    950: '#000000',
  },
}

SCSS

$custom: #243a66;
$custom-light: #666f92;
$custom-dark: #000000;

JSON

{
  "hex": "#243a66",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 102
  },
  "hsl": {
    "h": 220,
    "s": 47.826,
    "l": 27.059
  },
  "oklch": {
    "l": 0.35415,
    "c": 0.0817,
    "h": 262.9
  },
  "luminance": 0.0436
}

Semantic roles & 50–950 ramp

primary

#243A66

secondary

#99804C

accent

#AA50D7

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #243A66

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

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