#243F5C#243F5C

#243F5C is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.0% C 0.060 H 251.4°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#243F5C
RGB	rgb(36, 63, 92)
HSL	hsl(211, 44%, 25%)
HSV	hsv(211, 61%, 36%)
CMYK	cmyk(60.9%, 31.5%, 0%, 63.9%)
CIE-LAB	lab(25.87, -0.45, -20.38)
CIE-LCH	lch(25.87, 20.39, 268.73°)
OKLab	oklab(36.04% -0.0193 -0.0573)
OKLCH	oklch(36.04% 0.061 251.4)
XYZ	xyz(4.4361, 4.7024, 10.7970)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F5C #5C4124

analogous

#245B5C #243F5C #25245C

triadic

#243F5C #5C243F #3F5C24

tetradic

#243F5C #5C245B #5C4124 #245C25

square

#243F5C #5C245B #5C4124 #245C25

split-complementary

#243F5C #5C2524 #5B5C24

monochromatic

#090F16 #132130 #243F5C #355D88 #467BB4

Accessibility & contrast

On white

10.82

#243F5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#243F5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F5C

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F5C	#FFFFFF	#000000	##FFFFFF
##243F5C	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33405D

Deuteranopia (green-blind)

#2C3B5B

Tritanopia (blue-blind)

#004649

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243f5c;
/* rgb */ color: rgb(36, 63, 92);
/* oklch */ color: oklch(36.0% 0.060 251.4);

Tailwind

colors: {
  custom: {
    50: '#64738a',
    500: '#243f5c',
    950: '#000000',
  },
}

SCSS

$custom: #243f5c;
$custom-light: #64738a;
$custom-dark: #000000;

JSON

{
  "hex": "#243f5c",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 92
  },
  "hsl": {
    "h": 211.071,
    "s": 43.75,
    "l": 25.098
  },
  "oklch": {
    "l": 0.3604,
    "c": 0.0605,
    "h": 251.4
  },
  "luminance": 0.04703
}

Semantic roles & 50–950 ramp

primary

#243F5C

secondary

#906F4C

accent

#9654D3

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#06080B

muted

#7A7B7C

Preview Lab

Preview with #243F5C

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

Preview Lab → · Contrast checker → · Palette generator →