#243E58#243E58

#243E58 is a dark, muted cyan. Relative luminance 0.045; OKLCH L 35.6% C 0.056 H 249.6°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#243E58
RGB	rgb(36, 62, 88)
HSL	hsl(210, 42%, 24%)
HSV	hsv(210, 59%, 35%)
CMYK	cmyk(59.1%, 29.5%, 0%, 65.5%)
CIE-LAB	lab(25.34, -1.24, -18.61)
CIE-LCH	lch(25.34, 18.65, 266.17°)
OKLab	oklab(35.55% -0.0194 -0.0522)
OKLCH	oklch(35.55% 0.056 249.6)
XYZ	xyz(4.2110, 4.5246, 9.8820)
Luminance	0.0452 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243E58 #583E24

analogous

#245858 #243E58 #242458

triadic

#243E58 #58243E #3E5824

tetradic

#243E58 #582458 #583E24 #245824

square

#243E58 #582458 #583E24 #245824

split-complementary

#243E58 #582424 #585824

monochromatic

#090F16 #121F2D #243E58 #365D83 #487BAF

Accessibility & contrast

On white

11.02

#243E58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#243E58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243E58

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243E58	#FFFFFF	#000000	##FFFFFF
##243E58	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333F59

Deuteranopia (green-blind)

#2C3A57

Tritanopia (blue-blind)

#034447

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #243e58;
/* rgb */ color: rgb(36, 62, 88);
/* oklch */ color: oklch(35.6% 0.056 249.6);

Tailwind

colors: {
  custom: {
    50: '#637387',
    500: '#243e58',
    950: '#000000',
  },
}

SCSS

$custom: #243e58;
$custom-light: #637387;
$custom-dark: #000000;

JSON

{
  "hex": "#243e58",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 88
  },
  "hsl": {
    "h": 210,
    "s": 41.935,
    "l": 24.314
  },
  "oklch": {
    "l": 0.35553,
    "c": 0.0557,
    "h": 249.6
  },
  "luminance": 0.04525
}

Semantic roles & 50–950 ramp

primary

#243E58

secondary

#8C6C4C

accent

#9456D2

background

#F6F6F8

surface

#EBECEF

border

#C6C7CA

text

#05080B

muted

#7A7B7C

Preview Lab

Preview with #243E58

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

Preview Lab → · Contrast checker → · Palette generator →