#243D71#243D71

#243D71 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.9% C 0.095 H 263.2°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#243D71
RGB	rgb(36, 61, 113)
HSL	hsl(221, 52%, 29%)
HSV	hsv(221, 68%, 44%)
CMYK	cmyk(68.1%, 46%, 0%, 55.7%)
CIE-LAB	lab(26.46, 8.91, -32.95)
CIE-LCH	lch(26.46, 34.13, 285.13°)
OKLab	oklab(36.9% -0.0112 -0.0941)
OKLCH	oklch(36.9% 0.095 263.2)
XYZ	xyz(5.3759, 4.9043, 16.2829)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D71 #715824

analogous

#246471 #243D71 #312471

triadic

#243D71 #71243D #3D7124

tetradic

#243D71 #712464 #715824 #247131

square

#243D71 #712464 #715824 #247131

split-complementary

#243D71 #713124 #647124

monochromatic

#070D17 #152443 #243D71 #33569F #4A72C5

Accessibility & contrast

On white

10.60

#243D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#243D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D71

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D71	#FFFFFF	#000000	##FFFFFF
##243D71	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244273

Deuteranopia (green-blind)

#183B70

Tritanopia (blue-blind)

#004951

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243d71;
/* rgb */ color: rgb(36, 61, 113);
/* oklch */ color: oklch(36.9% 0.095 263.2);

Tailwind

colors: {
  custom: {
    50: '#68729a',
    500: '#243d71',
    950: '#000000',
  },
}

SCSS

$custom: #243d71;
$custom-light: #68729a;
$custom-dark: #000000;

JSON

{
  "hex": "#243d71",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 113
  },
  "hsl": {
    "h": 220.519,
    "s": 51.678,
    "l": 29.216
  },
  "oklch": {
    "l": 0.369,
    "c": 0.09475,
    "h": 263.2
  },
  "luminance": 0.04905
}

Semantic roles & 50–950 ramp

primary

#243D71

secondary

#A4884D

accent

#AD4DDB

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243D71

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

Preview Lab → · Contrast checker → · Palette generator →