#243C5D#243C5D

#243C5D is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.3% C 0.065 H 256.6°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#243C5D
RGB	rgb(36, 60, 93)
HSL	hsl(215, 44%, 25%)
HSV	hsv(215, 61%, 36%)
CMYK	cmyk(61.3%, 35.5%, 0%, 63.5%)
CIE-LAB	lab(24.94, 1.94, -22.49)
CIE-LCH	lch(24.94, 22.57, 274.94°)
OKLab	oklab(35.33% -0.0151 -0.0635)
OKLCH	oklch(35.33% 0.065 256.6)
XYZ	xyz(4.3185, 4.3967, 10.9749)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C5D #5D4524

analogous

#24585D #243C5D #28245D

triadic

#243C5D #5D243C #3C5D24

tetradic

#243C5D #5D2458 #5D4524 #245D28

square

#243C5D #5D2458 #5D4524 #245D28

split-complementary

#243C5D #5D2824 #585D24

monochromatic

#090E16 #132031 #243C5D #355889 #4675B5

Accessibility & contrast

On white

11.17

#243C5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#243C5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C5D

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C5D	#FFFFFF	#000000	##FFFFFF
##243C5D	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3E5E

Deuteranopia (green-blind)

#27395C

Tritanopia (blue-blind)

#004348

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #243c5d;
/* rgb */ color: rgb(36, 60, 93);
/* oklch */ color: oklch(35.3% 0.065 256.6);

Tailwind

colors: {
  custom: {
    50: '#64718b',
    500: '#243c5d',
    950: '#000000',
  },
}

SCSS

$custom: #243c5d;
$custom-light: #64718b;
$custom-dark: #000000;

JSON

{
  "hex": "#243c5d",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 93
  },
  "hsl": {
    "h": 214.737,
    "s": 44.186,
    "l": 25.294
  },
  "oklch": {
    "l": 0.35331,
    "c": 0.06524,
    "h": 256.6
  },
  "luminance": 0.04397
}

Semantic roles & 50–950 ramp

primary

#243C5D

secondary

#91744C

accent

#9E54D4

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #243C5D

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

Preview Lab → · Contrast checker → · Palette generator →