#243B5D#243B5D

#243B5D is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.1% C 0.066 H 258.0°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#243B5D
RGB	rgb(36, 59, 93)
HSL	hsl(216, 44%, 25%)
HSV	hsv(216, 61%, 36%)
CMYK	cmyk(61.3%, 36.6%, 0%, 63.5%)
CIE-LAB	lab(24.62, 2.62, -23.00)
CIE-LCH	lch(24.62, 23.15, 276.51°)
OKLab	oklab(35.08% -0.0138 -0.065)
OKLCH	oklch(35.08% 0.066 258)
XYZ	xyz(4.2666, 4.2930, 10.9576)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B5D #5D4624

analogous

#24585D #243B5D #29245D

triadic

#243B5D #5D243B #3B5D24

tetradic

#243B5D #5D2458 #5D4624 #245D29

square

#243B5D #5D2458 #5D4624 #245D29

split-complementary

#243B5D #5D2924 #585D24

monochromatic

#090E16 #131F31 #243B5D #355789 #4673B5

Accessibility & contrast

On white

11.30

#243B5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#243B5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B5D

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B5D	#FFFFFF	#000000	##FFFFFF
##243B5D	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3D5E

Deuteranopia (green-blind)

#26385C

Tritanopia (blue-blind)

#004347

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #243b5d;
/* rgb */ color: rgb(36, 59, 93);
/* oklch */ color: oklch(35.1% 0.066 258.0);

Tailwind

colors: {
  custom: {
    50: '#64708b',
    500: '#243b5d',
    950: '#000000',
  },
}

SCSS

$custom: #243b5d;
$custom-light: #64708b;
$custom-dark: #000000;

JSON

{
  "hex": "#243b5d",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 93
  },
  "hsl": {
    "h": 215.789,
    "s": 44.186,
    "l": 25.294
  },
  "oklch": {
    "l": 0.35078,
    "c": 0.06642,
    "h": 258
  },
  "luminance": 0.04293
}

Semantic roles & 50–950 ramp

primary

#243B5D

secondary

#91754C

accent

#A054D4

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #243B5D

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

Preview Lab → · Contrast checker → · Palette generator →