#243A78#243A78

#243A78 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.7% C 0.109 H 266.4°. Best body text is #FFFFFF at 10.76:1 contrast (WCAG AA passes).

Color values

HEX	#243A78
RGB	rgb(36, 58, 120)
HSL	hsl(224, 54%, 31%)
HSV	hsv(224, 70%, 47%)
CMYK	cmyk(70%, 51.7%, 0%, 52.9%)
CIE-LAB	lab(26.03, 13.74, -38.08)
CIE-LCH	lch(26.03, 40.48, 289.84°)
OKLab	oklab(36.72% -0.0069 -0.1092)
OKLCH	oklch(36.72% 0.109 266.4)
XYZ	xyz(5.6296, 4.7567, 18.3871)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A78 #786224

analogous

#246478 #243A78 #382478

triadic

#243A78 #78243A #3A7824

tetradic

#243A78 #782464 #786224 #247838

square

#243A78 #782464 #786224 #247838

split-complementary

#243A78 #783824 #647824

monochromatic

#080C1A #162349 #243A78 #3251A7 #4D6ECA

Accessibility & contrast

On white

10.76

#243A78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#243A78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A78

10.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A78	#FFFFFF	#000000	##FFFFFF
##243A78	1.00	10.76	1.95	10.76
#FFFFFF	10.76	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17427A

Deuteranopia (green-blind)

#003A77

Tritanopia (blue-blind)

#004953

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #243a78;
/* rgb */ color: rgb(36, 58, 120);
/* oklch */ color: oklch(36.7% 0.109 266.4);

Tailwind

colors: {
  custom: {
    50: '#696f9f',
    500: '#243a78',
    950: '#000000',
  },
}

SCSS

$custom: #243a78;
$custom-light: #696f9f;
$custom-dark: #000000;

JSON

{
  "hex": "#243a78",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 120
  },
  "hsl": {
    "h": 224.286,
    "s": 53.846,
    "l": 30.588
  },
  "oklch": {
    "l": 0.36724,
    "c": 0.10943,
    "h": 266.4
  },
  "luminance": 0.04757
}

Semantic roles & 50–950 ramp

primary

#243A78

secondary

#AB924D

accent

#B74BDD

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243A78

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

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