#243DA0#243DA0

#243DA0 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.7% C 0.163 H 267.5°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#243DA0
RGB	rgb(36, 61, 160)
HSL	hsl(228, 63%, 38%)
HSV	hsv(228, 78%, 63%)
CMYK	cmyk(77.5%, 61.9%, 0%, 37.3%)
CIE-LAB	lab(30.03, 27.25, -56.31)
CIE-LCH	lch(30.03, 62.56, 295.83°)
OKLab	oklab(40.73% -0.0071 -0.1628)
OKLCH	oklch(40.73% 0.163 267.5)
XYZ	xyz(8.7393, 6.2496, 33.9966)
Luminance	0.0625 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243DA0 #A08724

analogous

#247BA0 #243DA0 #4924A0

triadic

#243DA0 #A0243D #3DA024

tetradic

#243DA0 #A0247B #A08724 #24A049

square

#243DA0 #A0247B #A08724 #24A049

split-complementary

#243DA0 #A04924 #7BA024

monochromatic

#0E173C #192A6E #243DA0 #3151D1 #637BDC

Accessibility & contrast

On white

9.33

#243DA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#243DA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243DA0

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243DA0	#FFFFFF	#000000	##FFFFFF
##243DA0	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA3

Deuteranopia (green-blind)

#00419E

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #243da0;
/* rgb */ color: rgb(36, 61, 160);
/* oklch */ color: oklch(40.7% 0.163 267.5);

Tailwind

colors: {
  custom: {
    50: '#7372bd',
    500: '#243da0',
    950: '#000000',
  },
}

SCSS

$custom: #243da0;
$custom-light: #7372bd;
$custom-dark: #000000;

JSON

{
  "hex": "#243da0",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 160
  },
  "hsl": {
    "h": 227.903,
    "s": 63.265,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40728,
    "c": 0.16291,
    "h": 267.5
  },
  "luminance": 0.06251
}

Semantic roles & 50–950 ramp

primary

#243DA0

secondary

#C1AD5F

accent

#C541E6

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #243DA0

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

Preview Lab → · Contrast checker → · Palette generator →