#243C7D#243C7D

#243C7D is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.6% C 0.114 H 265.9°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#243C7D
RGB	rgb(36, 60, 125)
HSL	hsl(224, 55%, 32%)
HSV	hsv(224, 71%, 49%)
CMYK	cmyk(71.2%, 52%, 0%, 51%)
CIE-LAB	lab(26.98, 14.31, -39.70)
CIE-LCH	lch(26.98, 42.20, 289.82°)
OKLab	oklab(37.56% -0.0082 -0.1139)
OKLCH	oklch(37.56% 0.114 265.9)
XYZ	xyz(6.0438, 5.0869, 20.0614)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C7D #7D6524

analogous

#24697D #243C7D #39247D

triadic

#243C7D #7D243C #3C7D24

tetradic

#243C7D #7D2469 #7D6524 #247D39

square

#243C7D #7D2469 #7D6524 #247D39

split-complementary

#243C7D #7D3924 #697D24

monochromatic

#090E1E #16254D #243C7D #3253AD #4F71CC

Accessibility & contrast

On white

10.41

#243C7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#243C7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C7D

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C7D	#FFFFFF	#000000	##FFFFFF
##243C7D	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16447F

Deuteranopia (green-blind)

#003C7C

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243c7d;
/* rgb */ color: rgb(36, 60, 125);
/* oklch */ color: oklch(37.6% 0.114 265.9);

Tailwind

colors: {
  custom: {
    50: '#6a71a3',
    500: '#243c7d',
    950: '#000000',
  },
}

SCSS

$custom: #243c7d;
$custom-light: #6a71a3;
$custom-dark: #000000;

JSON

{
  "hex": "#243c7d",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 125
  },
  "hsl": {
    "h": 223.82,
    "s": 55.28,
    "l": 31.569
  },
  "oklch": {
    "l": 0.37562,
    "c": 0.11425,
    "h": 265.9
  },
  "luminance": 0.05087
}

Semantic roles & 50–950 ramp

primary

#243C7D

secondary

#AF954D

accent

#B649DF

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #243C7D

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

Preview Lab → · Contrast checker → · Palette generator →