#243C5F#243C5F

#243C5F is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.5% C 0.068 H 257.8°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#243C5F
RGB	rgb(36, 60, 95)
HSL	hsl(216, 45%, 26%)
HSV	hsv(216, 62%, 37%)
CMYK	cmyk(62.1%, 36.8%, 0%, 62.7%)
CIE-LAB	lab(25.05, 2.69, -23.61)
CIE-LCH	lch(25.05, 23.77, 276.50°)
OKLab	oklab(35.46% -0.0145 -0.0667)
OKLCH	oklch(35.46% 0.068 257.8)
XYZ	xyz(4.4082, 4.4326, 11.4475)
Luminance	0.0443 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C5F #5F4724

analogous

#24595F #243C5F #29245F

triadic

#243C5F #5F243C #3C5F24

tetradic

#243C5F #5F2459 #5F4724 #245F29

square

#243C5F #5F2459 #5F4724 #245F29

split-complementary

#243C5F #5F2924 #595F24

monochromatic

#080E16 #132033 #243C5F #35588B #4674B8

Accessibility & contrast

On white

11.13

#243C5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#243C5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C5F

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C5F	#FFFFFF	#000000	##FFFFFF
##243C5F	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3E60

Deuteranopia (green-blind)

#26395E

Tritanopia (blue-blind)

#004449

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #243c5f;
/* rgb */ color: rgb(36, 60, 95);
/* oklch */ color: oklch(35.5% 0.068 257.8);

Tailwind

colors: {
  custom: {
    50: '#64718c',
    500: '#243c5f',
    950: '#000000',
  },
}

SCSS

$custom: #243c5f;
$custom-light: #64718c;
$custom-dark: #000000;

JSON

{
  "hex": "#243c5f",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 95
  },
  "hsl": {
    "h": 215.593,
    "s": 45.038,
    "l": 25.686
  },
  "oklch": {
    "l": 0.35455,
    "c": 0.0683,
    "h": 257.8
  },
  "luminance": 0.04433
}

Semantic roles & 50–950 ramp

primary

#243C5F

secondary

#93764C

accent

#A053D5

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #243C5F

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

Preview Lab → · Contrast checker → · Palette generator →