#243E5A#243E5A

#243E5A is a dark, muted cyan. Relative luminance 0.046; OKLCH L 35.7% C 0.059 H 251.4°. Best body text is #FFFFFF at 10.98:1 contrast (WCAG AA passes).

Color values

HEX	#243E5A
RGB	rgb(36, 62, 90)
HSL	hsl(211, 43%, 25%)
HSV	hsv(211, 60%, 35%)
CMYK	cmyk(60%, 31.1%, 0%, 64.7%)
CIE-LAB	lab(25.44, -0.51, -19.76)
CIE-LCH	lch(25.44, 19.76, 268.51°)
OKLab	oklab(35.67% -0.0187 -0.0555)
OKLCH	oklch(35.67% 0.059 251.4)
XYZ	xyz(4.2950, 4.5581, 10.3244)
Luminance	0.0456 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243E5A #5A4024

analogous

#24595A #243E5A #25245A

triadic

#243E5A #5A243E #3E5A24

tetradic

#243E5A #5A2459 #5A4024 #245A25

square

#243E5A #5A2459 #5A4024 #245A25

split-complementary

#243E5A #5A2524 #595A24

monochromatic

#090F16 #13202E #243E5A #355C86 #477AB1

Accessibility & contrast

On white

10.98

#243E5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#243E5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243E5A

10.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243E5A	#FFFFFF	#000000	##FFFFFF
##243E5A	1.00	10.98	1.91	10.98
#FFFFFF	10.98	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323F5B

Deuteranopia (green-blind)

#2B3A59

Tritanopia (blue-blind)

#014448

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #243e5a;
/* rgb */ color: rgb(36, 62, 90);
/* oklch */ color: oklch(35.7% 0.059 251.4);

Tailwind

colors: {
  custom: {
    50: '#637388',
    500: '#243e5a',
    950: '#000000',
  },
}

SCSS

$custom: #243e5a;
$custom-light: #637388;
$custom-dark: #000000;

JSON

{
  "hex": "#243e5a",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 90
  },
  "hsl": {
    "h": 211.111,
    "s": 42.857,
    "l": 24.706
  },
  "oklch": {
    "l": 0.35666,
    "c": 0.05858,
    "h": 251.4
  },
  "luminance": 0.04559
}

Semantic roles & 50–950 ramp

primary

#243E5A

secondary

#8E6E4C

accent

#9655D3

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#05080B

muted

#7A7B7C

Preview Lab

Preview with #243E5A

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

Preview Lab → · Contrast checker → · Palette generator →