#243F6A#243F6A

#243F6A is a dark, moderate blue. Relative luminance 0.050; OKLCH L 36.9% C 0.081 H 259.3°. Best body text is #FFFFFF at 10.53:1 contrast (WCAG AA passes).

Color values

HEX	#243F6A
RGB	rgb(36, 63, 106)
HSL	hsl(217, 49%, 28%)
HSV	hsv(217, 66%, 42%)
CMYK	cmyk(66%, 40.6%, 0%, 58.4%)
CIE-LAB	lab(26.65, 4.82, -28.18)
CIE-LCH	lch(26.65, 28.59, 279.71°)
OKLab	oklab(36.91% -0.0151 -0.0801)
OKLCH	oklch(36.91% 0.081 259.3)
XYZ	xyz(5.1057, 4.9702, 14.3232)
Luminance	0.0497 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F6A #6A4F24

analogous

#24626A #243F6A #2C246A

triadic

#243F6A #6A243F #3F6A24

tetradic

#243F6A #6A2462 #6A4F24 #246A2C

square

#243F6A #6A2462 #6A4F24 #246A2C

split-complementary

#243F6A #6A2C24 #626A24

monochromatic

#080E17 #14243C #243F6A #345A98 #4876C1

Accessibility & contrast

On white

10.53

#243F6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#243F6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F6A

10.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F6A	#FFFFFF	#000000	##FFFFFF
##243F6A	1.00	10.53	1.99	10.53
#FFFFFF	10.53	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C436C

Deuteranopia (green-blind)

#233C69

Tritanopia (blue-blind)

#00494F

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243f6a;
/* rgb */ color: rgb(36, 63, 106);
/* oklch */ color: oklch(36.9% 0.081 259.3);

Tailwind

colors: {
  custom: {
    50: '#667395',
    500: '#243f6a',
    950: '#000000',
  },
}

SCSS

$custom: #243f6a;
$custom-light: #667395;
$custom-dark: #000000;

JSON

{
  "hex": "#243f6a",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 106
  },
  "hsl": {
    "h": 216.857,
    "s": 49.296,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36905,
    "c": 0.08147,
    "h": 259.3
  },
  "luminance": 0.04971
}

Semantic roles & 50–950 ramp

primary

#243F6A

secondary

#9D7E4D

accent

#A44FD9

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #243F6A

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

Preview Lab → · Contrast checker → · Palette generator →