#243F5D#243F5D

#243F5D is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.1% C 0.062 H 252.2°. Best body text is #FFFFFF at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#243F5D
RGB	rgb(36, 63, 93)
HSL	hsl(212, 44%, 25%)
HSV	hsv(212, 61%, 36%)
CMYK	cmyk(61.3%, 32.3%, 0%, 63.5%)
CIE-LAB	lab(25.92, -0.08, -20.95)
CIE-LCH	lch(25.92, 20.95, 269.78°)
OKLab	oklab(36.1% -0.019 -0.059)
OKLCH	oklch(36.1% 0.062 252.2)
XYZ	xyz(4.4801, 4.7200, 11.0288)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F5D #5D4224

analogous

#245B5D #243F5D #25245D

triadic

#243F5D #5D243F #3F5D24

tetradic

#243F5D #5D245B #5D4224 #245D25

square

#243F5D #5D245B #5D4224 #245D25

split-complementary

#243F5D #5D2524 #5B5D24

monochromatic

#090F16 #132131 #243F5D #355D89 #467BB5

Accessibility & contrast

On white

10.80

#243F5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#243F5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F5D

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F5D	#FFFFFF	#000000	##FFFFFF
##243F5D	1.00	10.80	1.94	10.80
#FFFFFF	10.80	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33405E

Deuteranopia (green-blind)

#2B3B5C

Tritanopia (blue-blind)

#00464A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243f5d;
/* rgb */ color: rgb(36, 63, 93);
/* oklch */ color: oklch(36.1% 0.062 252.2);

Tailwind

colors: {
  custom: {
    50: '#64738b',
    500: '#243f5d',
    950: '#000000',
  },
}

SCSS

$custom: #243f5d;
$custom-light: #64738b;
$custom-dark: #000000;

JSON

{
  "hex": "#243f5d",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 93
  },
  "hsl": {
    "h": 211.579,
    "s": 44.186,
    "l": 25.294
  },
  "oklch": {
    "l": 0.36098,
    "c": 0.06195,
    "h": 252.2
  },
  "luminance": 0.0472
}

Semantic roles & 50–950 ramp

primary

#243F5D

secondary

#91704C

accent

#9754D4

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#06080C

muted

#7A7B7D

Preview Lab

Preview with #243F5D

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

Preview Lab → · Contrast checker → · Palette generator →