#243C66#243C66

#243C66 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 35.9% C 0.079 H 260.9°. Best body text is #FFFFFF at 10.98:1 contrast (WCAG AA passes).

Color values

HEX	#243C66
RGB	rgb(36, 60, 102)
HSL	hsl(218, 48%, 27%)
HSV	hsv(218, 65%, 40%)
CMYK	cmyk(64.7%, 41.2%, 0%, 60%)
CIE-LAB	lab(25.46, 5.35, -27.50)
CIE-LCH	lch(25.46, 28.02, 281.00°)
OKLab	oklab(35.9% -0.0125 -0.0781)
OKLCH	oklch(35.9% 0.079 260.9)
XYZ	xyz(4.7408, 4.5657, 13.1992)
Luminance	0.0457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C66 #664E24

analogous

#245D66 #243C66 #2D2466

triadic

#243C66 #66243C #3C6624

tetradic

#243C66 #66245D #664E24 #24662D

square

#243C66 #66245D #664E24 #24662D

split-complementary

#243C66 #662D24 #5D6624

monochromatic

#080D17 #142139 #243C66 #345793 #4772BE

Accessibility & contrast

On white

10.98

#243C66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#243C66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C66

10.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C66	#FFFFFF	#000000	##FFFFFF
##243C66	1.00	10.98	1.91	10.98
#FFFFFF	10.98	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A4068

Deuteranopia (green-blind)

#213A65

Tritanopia (blue-blind)

#00454C

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #243c66;
/* rgb */ color: rgb(36, 60, 102);
/* oklch */ color: oklch(35.9% 0.079 260.9);

Tailwind

colors: {
  custom: {
    50: '#667192',
    500: '#243c66',
    950: '#000000',
  },
}

SCSS

$custom: #243c66;
$custom-light: #667192;
$custom-dark: #000000;

JSON

{
  "hex": "#243c66",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 102
  },
  "hsl": {
    "h": 218.182,
    "s": 47.826,
    "l": 27.059
  },
  "oklch": {
    "l": 0.35904,
    "c": 0.07911,
    "h": 260.9
  },
  "luminance": 0.04566
}

Semantic roles & 50–950 ramp

primary

#243C66

secondary

#997D4C

accent

#A650D7

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #243C66

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

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