#243C7A#243C7A

#243C7A is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.110 H 265.5°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#243C7A
RGB	rgb(36, 60, 122)
HSL	hsl(223, 54%, 31%)
HSV	hsv(223, 70%, 48%)
CMYK	cmyk(70.5%, 50.8%, 0%, 52.2%)
CIE-LAB	lab(26.77, 13.13, -38.16)
CIE-LCH	lch(26.77, 40.35, 288.99°)
OKLab	oklab(37.33% -0.0086 -0.1094)
OKLCH	oklch(37.33% 0.11 265.5)
XYZ	xyz(5.8550, 5.0114, 19.0673)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C7A #7A6224

analogous

#24677A #243C7A #37247A

triadic

#243C7A #7A243C #3C7A24

tetradic

#243C7A #7A2467 #7A6224 #247A37

square

#243C7A #7A2467 #7A6224 #247A37

split-complementary

#243C7A #7A3724 #677A24

monochromatic

#080E1B #16254B #243C7A #3253A9 #4E71CB

Accessibility & contrast

On white

10.49

#243C7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#243C7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C7A

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C7A	#FFFFFF	#000000	##FFFFFF
##243C7A	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A437C

Deuteranopia (green-blind)

#033C79

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243c7a;
/* rgb */ color: rgb(36, 60, 122);
/* oklch */ color: oklch(37.3% 0.110 265.5);

Tailwind

colors: {
  custom: {
    50: '#6a71a1',
    500: '#243c7a',
    950: '#000000',
  },
}

SCSS

$custom: #243c7a;
$custom-light: #6a71a1;
$custom-dark: #000000;

JSON

{
  "hex": "#243c7a",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 122
  },
  "hsl": {
    "h": 223.256,
    "s": 54.43,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37331,
    "c": 0.10974,
    "h": 265.5
  },
  "luminance": 0.05012
}

Semantic roles & 50–950 ramp

primary

#243C7A

secondary

#AC924D

accent

#B54ADE

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #243C7A

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

Preview Lab → · Contrast checker → · Palette generator →