#243F55#243F55

#243F55 is a dark, muted cyan. Relative luminance 0.046; OKLCH L 35.6% C 0.051 H 244.5°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#243F55
RGB	rgb(36, 63, 85)
HSL	hsl(207, 40%, 24%)
HSV	hsv(207, 58%, 33%)
CMYK	cmyk(57.6%, 25.9%, 0%, 66.7%)
CIE-LAB	lab(25.52, -2.98, -16.36)
CIE-LCH	lch(25.52, 16.63, 259.67°)
OKLab	oklab(35.65% -0.0218 -0.0457)
OKLCH	oklch(35.65% 0.051 244.5)
XYZ	xyz(4.1442, 4.5856, 9.2593)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F55 #553A24

analogous

#245552 #243F55 #242655

triadic

#243F55 #55243F #3F5524

tetradic

#243F55 #522455 #553A24 #265524

square

#243F55 #522455 #553A24 #265524

split-complementary

#243F55 #552426 #555224

monochromatic

#091015 #121F2A #243F55 #365F80 #487FAB

Accessibility & contrast

On white

10.95

#243F55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#243F55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F55

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F55	#FFFFFF	#000000	##FFFFFF
##243F55	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363F56

Deuteranopia (green-blind)

#2F3A55

Tritanopia (blue-blind)

#074446

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #243f55;
/* rgb */ color: rgb(36, 63, 85);
/* oklch */ color: oklch(35.6% 0.051 244.5);

Tailwind

colors: {
  custom: {
    50: '#637385',
    500: '#243f55',
    950: '#000000',
  },
}

SCSS

$custom: #243f55;
$custom-light: #637385;
$custom-dark: #000000;

JSON

{
  "hex": "#243f55",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 85
  },
  "hsl": {
    "h": 206.939,
    "s": 40.496,
    "l": 23.725
  },
  "oklch": {
    "l": 0.3565,
    "c": 0.0507,
    "h": 244.5
  },
  "luminance": 0.04586
}

Semantic roles & 50–950 ramp

primary

#243F55

secondary

#89674C

accent

#8E57D0

background

#F6F7F8

surface

#EBEDEF

border

#C6C8CA

text

#05080B

muted

#7A7B7C

Preview Lab

Preview with #243F55

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

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