#243D9D#243D9D

#243D9D is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.5% C 0.159 H 267.4°. Best body text is #FFFFFF at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#243D9D
RGB	rgb(36, 61, 157)
HSL	hsl(228, 63%, 38%)
HSV	hsv(228, 77%, 62%)
CMYK	cmyk(77.1%, 61.1%, 0%, 38.4%)
CIE-LAB	lab(29.78, 26.10, -54.91)
CIE-LCH	lch(29.78, 60.80, 295.42°)
OKLab	oklab(40.46% -0.0071 -0.1587)
OKLCH	oklch(40.46% 0.159 267.4)
XYZ	xyz(8.4800, 6.1459, 32.6311)
Luminance	0.0615 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D9D #9D8424

analogous

#247A9D #243D9D #47249D

triadic

#243D9D #9D243D #3D9D24

tetradic

#243D9D #9D247A #9D8424 #249D47

square

#243D9D #9D247A #9D8424 #249D47

split-complementary

#243D9D #9D4724 #7A9D24

monochromatic

#0D1639 #192A6B #243D9D #2F50CF #617ADB

Accessibility & contrast

On white

9.42

#243D9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#243D9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D9D

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D9D	#FFFFFF	#000000	##FFFFFF
##243D9D	1.00	9.42	2.23	9.42
#FFFFFF	9.42	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA0

Deuteranopia (green-blind)

#00419B

Tritanopia (blue-blind)

#005567

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #243d9d;
/* rgb */ color: rgb(36, 61, 157);
/* oklch */ color: oklch(40.5% 0.159 267.4);

Tailwind

colors: {
  custom: {
    50: '#7272bb',
    500: '#243d9d',
    950: '#000000',
  },
}

SCSS

$custom: #243d9d;
$custom-light: #7272bb;
$custom-dark: #000000;

JSON

{
  "hex": "#243d9d",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 157
  },
  "hsl": {
    "h": 227.603,
    "s": 62.694,
    "l": 37.843
  },
  "oklch": {
    "l": 0.40458,
    "c": 0.15881,
    "h": 267.4
  },
  "luminance": 0.06147
}

Semantic roles & 50–950 ramp

primary

#243D9D

secondary

#C0AB5D

accent

#C442E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #243D9D

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

Preview Lab → · Contrast checker → · Palette generator →