#243A7C#243A7C

#243A7C is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.115 H 266.8°. Best body text is #FFFFFF at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#243A7C
RGB	rgb(36, 58, 124)
HSL	hsl(225, 55%, 31%)
HSV	hsv(225, 71%, 49%)
CMYK	cmyk(71%, 53.2%, 0%, 51.4%)
CIE-LAB	lab(26.32, 15.31, -40.14)
CIE-LCH	lch(26.32, 42.96, 290.88°)
OKLab	oklab(37.04% -0.0064 -0.1153)
OKLCH	oklch(37.04% 0.115 266.8)
XYZ	xyz(5.8774, 4.8558, 19.6924)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A7C #7C6624

analogous

#24667C #243A7C #3A247C

triadic

#243A7C #7C243A #3A7C24

tetradic

#243A7C #7C2466 #7C6624 #247C3A

square

#243A7C #7C2466 #7C6624 #247C3A

split-complementary

#243A7C #7C3A24 #667C24

monochromatic

#080E1D #16244D #243A7C #3250AB #4F6ECC

Accessibility & contrast

On white

10.65

#243A7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#243A7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A7C

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A7C	#FFFFFF	#000000	##FFFFFF
##243A7C	1.00	10.65	1.97	10.65
#FFFFFF	10.65	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#12427E

Deuteranopia (green-blind)

#003A7B

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #243a7c;
/* rgb */ color: rgb(36, 58, 124);
/* oklch */ color: oklch(37.0% 0.115 266.8);

Tailwind

colors: {
  custom: {
    50: '#6a6fa2',
    500: '#243a7c',
    950: '#000000',
  },
}

SCSS

$custom: #243a7c;
$custom-light: #6a6fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#243a7c",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 124
  },
  "hsl": {
    "h": 225,
    "s": 55,
    "l": 31.373
  },
  "oklch": {
    "l": 0.37037,
    "c": 0.11545,
    "h": 266.8
  },
  "luminance": 0.04856
}

Semantic roles & 50–950 ramp

primary

#243A7C

secondary

#AE964D

accent

#B949DE

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #243A7C

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

Preview Lab → · Contrast checker → · Palette generator →