#243F5E#243F5E

#243F5E is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.2% C 0.063 H 252.9°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#243F5E
RGB	rgb(36, 63, 94)
HSL	hsl(212, 45%, 25%)
HSV	hsv(212, 62%, 37%)
CMYK	cmyk(61.7%, 33%, 0%, 63.1%)
CIE-LAB	lab(25.97, 0.29, -21.52)
CIE-LCH	lch(25.97, 21.52, 270.77°)
OKLab	oklab(36.16% -0.0186 -0.0606)
OKLCH	oklch(36.16% 0.063 252.9)
XYZ	xyz(4.5247, 4.7378, 11.2636)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F5E #5E4324

analogous

#245C5E #243F5E #26245E

triadic

#243F5E #5E243F #3F5E24

tetradic

#243F5E #5E245C #5E4324 #245E26

square

#243F5E #5E245C #5E4324 #245E26

split-complementary

#243F5E #5E2624 #5C5E24

monochromatic

#080F16 #132132 #243F5E #355D8A #467AB7

Accessibility & contrast

On white

10.78

#243F5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#243F5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F5E

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F5E	#FFFFFF	#000000	##FFFFFF
##243F5E	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#32415F

Deuteranopia (green-blind)

#2B3B5D

Tritanopia (blue-blind)

#00464A

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243f5e;
/* rgb */ color: rgb(36, 63, 94);
/* oklch */ color: oklch(36.2% 0.063 252.9);

Tailwind

colors: {
  custom: {
    50: '#64738c',
    500: '#243f5e',
    950: '#000000',
  },
}

SCSS

$custom: #243f5e;
$custom-light: #64738c;
$custom-dark: #000000;

JSON

{
  "hex": "#243f5e",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 94
  },
  "hsl": {
    "h": 212.069,
    "s": 44.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.36157,
    "c": 0.06341,
    "h": 252.9
  },
  "luminance": 0.04738
}

Semantic roles & 50–950 ramp

primary

#243F5E

secondary

#92714C

accent

#9853D4

background

#F6F7F8

surface

#EBEDF0

border

#C6C8CB

text

#06080C

muted

#7A7B7D

Preview Lab

Preview with #243F5E

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

Preview Lab → · Contrast checker → · Palette generator →