#243E5B#243E5B

#243E5B is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.7% C 0.060 H 252.2°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#243E5B
RGB	rgb(36, 62, 91)
HSL	hsl(212, 43%, 25%)
HSV	hsv(212, 60%, 36%)
CMYK	cmyk(60.4%, 31.9%, 0%, 64.3%)
CIE-LAB	lab(25.49, -0.15, -20.33)
CIE-LCH	lch(25.49, 20.33, 269.58°)
OKLab	oklab(35.72% -0.0183 -0.0572)
OKLCH	oklch(35.72% 0.06 252.2)
XYZ	xyz(4.3378, 4.5753, 10.5500)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243E5B #5B4124

analogous

#245A5B #243E5B #25245B

triadic

#243E5B #5B243E #3E5B24

tetradic

#243E5B #5B245A #5B4124 #245B25

square

#243E5B #5B245A #5B4124 #245B25

split-complementary

#243E5B #5B2524 #5A5B24

monochromatic

#090F16 #13202F #243E5B #355C87 #477AB3

Accessibility & contrast

On white

10.96

#243E5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#243E5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243E5B

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243E5B	#FFFFFF	#000000	##FFFFFF
##243E5B	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323F5C

Deuteranopia (green-blind)

#2B3A5A

Tritanopia (blue-blind)

#004548

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #243e5b;
/* rgb */ color: rgb(36, 62, 91);
/* oklch */ color: oklch(35.7% 0.060 252.2);

Tailwind

colors: {
  custom: {
    50: '#647389',
    500: '#243e5b',
    950: '#000000',
  },
}

SCSS

$custom: #243e5b;
$custom-light: #647389;
$custom-dark: #000000;

JSON

{
  "hex": "#243e5b",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 91
  },
  "hsl": {
    "h": 211.636,
    "s": 43.307,
    "l": 24.902
  },
  "oklch": {
    "l": 0.35724,
    "c": 0.06006,
    "h": 252.2
  },
  "luminance": 0.04576
}

Semantic roles & 50–950 ramp

primary

#243E5B

secondary

#8F6F4C

accent

#9755D3

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06080B

muted

#7A7B7C

Preview Lab

Preview with #243E5B

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

Preview Lab → · Contrast checker → · Palette generator →