#243A71#243A71

#243A71 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.2% C 0.099 H 265.4°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#243A71
RGB	rgb(36, 58, 113)
HSL	hsl(223, 52%, 29%)
HSV	hsv(223, 68%, 44%)
CMYK	cmyk(68.1%, 48.7%, 0%, 55.7%)
CIE-LAB	lab(25.54, 11.00, -34.42)
CIE-LCH	lch(25.54, 36.14, 287.72°)
OKLab	oklab(36.2% -0.008 -0.0984)
OKLCH	oklch(36.2% 0.099 265.4)
XYZ	xyz(5.2202, 4.5929, 16.2310)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A71 #715B24

analogous

#246171 #243A71 #352471

triadic

#243A71 #71243A #3A7124

tetradic

#243A71 #712461 #715B24 #247135

square

#243A71 #712461 #715B24 #247135

split-complementary

#243A71 #713524 #617124

monochromatic

#070C17 #152243 #243A71 #33529F #4A6DC5

Accessibility & contrast

On white

10.95

#243A71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#243A71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A71

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A71	#FFFFFF	#000000	##FFFFFF
##243A71	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4073

Deuteranopia (green-blind)

#103970

Tritanopia (blue-blind)

#004750

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243a71;
/* rgb */ color: rgb(36, 58, 113);
/* oklch */ color: oklch(36.2% 0.099 265.4);

Tailwind

colors: {
  custom: {
    50: '#686f9a',
    500: '#243a71',
    950: '#000000',
  },
}

SCSS

$custom: #243a71;
$custom-light: #686f9a;
$custom-dark: #000000;

JSON

{
  "hex": "#243a71",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 113
  },
  "hsl": {
    "h": 222.857,
    "s": 51.678,
    "l": 29.216
  },
  "oklch": {
    "l": 0.36195,
    "c": 0.09877,
    "h": 265.4
  },
  "luminance": 0.04593
}

Semantic roles & 50–950 ramp

primary

#243A71

secondary

#A48B4D

accent

#B24DDB

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243A71

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

Preview Lab → · Contrast checker → · Palette generator →