#243A74#243A74

#243A74 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.4% C 0.103 H 265.9°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#243A74
RGB	rgb(36, 58, 116)
HSL	hsl(224, 53%, 30%)
HSV	hsv(224, 69%, 45%)
CMYK	cmyk(69%, 50%, 0%, 54.5%)
CIE-LAB	lab(25.75, 12.17, -36.00)
CIE-LCH	lch(25.75, 38.00, 288.68°)
OKLab	oklab(36.42% -0.0075 -0.1031)
OKLCH	oklch(36.42% 0.103 265.9)
XYZ	xyz(5.3919, 4.6616, 17.1352)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A74 #745E24

analogous

#246274 #243A74 #362474

triadic

#243A74 #74243A #3A7424

tetradic

#243A74 #742462 #745E24 #247436

square

#243A74 #742462 #745E24 #247436

split-complementary

#243A74 #743624 #627424

monochromatic

#070C17 #162345 #243A74 #3251A3 #4B6DC7

Accessibility & contrast

On white

10.87

#243A74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#243A74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A74

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A74	#FFFFFF	#000000	##FFFFFF
##243A74	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C4176

Deuteranopia (green-blind)

#0A3A73

Tritanopia (blue-blind)

#004751

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243a74;
/* rgb */ color: rgb(36, 58, 116);
/* oklch */ color: oklch(36.4% 0.103 265.9);

Tailwind

colors: {
  custom: {
    50: '#686f9c',
    500: '#243a74',
    950: '#000000',
  },
}

SCSS

$custom: #243a74;
$custom-light: #686f9c;
$custom-dark: #000000;

JSON

{
  "hex": "#243a74",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 116
  },
  "hsl": {
    "h": 223.5,
    "s": 52.632,
    "l": 29.804
  },
  "oklch": {
    "l": 0.36419,
    "c": 0.10336,
    "h": 265.9
  },
  "luminance": 0.04662
}

Semantic roles & 50–950 ramp

primary

#243A74

secondary

#A78E4D

accent

#B44CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243A74

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

Preview Lab → · Contrast checker → · Palette generator →