#243C6D#243C6D

#243C6D is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.4% C 0.090 H 263.0°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#243C6D
RGB	rgb(36, 60, 109)
HSL	hsl(220, 50%, 28%)
HSV	hsv(220, 67%, 43%)
CMYK	cmyk(67%, 45%, 0%, 57.3%)
CIE-LAB	lab(25.89, 8.05, -31.31)
CIE-LCH	lch(25.89, 32.32, 284.42°)
OKLab	oklab(36.38% -0.0109 -0.0893)
OKLCH	oklch(36.38% 0.09 263)
XYZ	xyz(5.1028, 4.7104, 15.1053)
Luminance	0.0471 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C6D #6D5524

analogous

#24606D #243C6D #30246D

triadic

#243C6D #6D243C #3C6D24

tetradic

#243C6D #6D2460 #6D5524 #246D30

square

#243C6D #6D2460 #6D5524 #246D30

split-complementary

#243C6D #6D3024 #606D24

monochromatic

#080D17 #15233F #243C6D #33559B #4971C3

Accessibility & contrast

On white

10.81

#243C6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#243C6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C6D

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C6D	#FFFFFF	#000000	##FFFFFF
##243C6D	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25416F

Deuteranopia (green-blind)

#1A3A6C

Tritanopia (blue-blind)

#00474F

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243c6d;
/* rgb */ color: rgb(36, 60, 109);
/* oklch */ color: oklch(36.4% 0.090 263.0);

Tailwind

colors: {
  custom: {
    50: '#677197',
    500: '#243c6d',
    950: '#000000',
  },
}

SCSS

$custom: #243c6d;
$custom-light: #677197;
$custom-dark: #000000;

JSON

{
  "hex": "#243c6d",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 109
  },
  "hsl": {
    "h": 220.274,
    "s": 50.345,
    "l": 28.431
  },
  "oklch": {
    "l": 0.3638,
    "c": 0.08993,
    "h": 263
  },
  "luminance": 0.04711
}

Semantic roles & 50–950 ramp

primary

#243C6D

secondary

#A0854D

accent

#AC4EDA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #243C6D

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

Preview Lab → · Contrast checker → · Palette generator →