#243A79#243A79

#243A79 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.8% C 0.111 H 266.5°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#243A79
RGB	rgb(36, 58, 121)
HSL	hsl(224, 54%, 31%)
HSV	hsv(224, 70%, 47%)
CMYK	cmyk(70.2%, 52.1%, 0%, 52.5%)
CIE-LAB	lab(26.10, 14.13, -38.60)
CIE-LCH	lch(26.10, 41.10, 290.11°)
OKLab	oklab(36.8% -0.0068 -0.1107)
OKLCH	oklch(36.8% 0.111 266.5)
XYZ	xyz(5.6906, 4.7811, 18.7084)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A79 #796324

analogous

#246479 #243A79 #392479

triadic

#243A79 #79243A #3A7924

tetradic

#243A79 #792464 #796324 #247939

square

#243A79 #792464 #796324 #247939

split-complementary

#243A79 #793924 #647924

monochromatic

#080D1B #16234A #243A79 #3251A8 #4D6ECA

Accessibility & contrast

On white

10.73

#243A79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#243A79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A79

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A79	#FFFFFF	#000000	##FFFFFF
##243A79	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#16427B

Deuteranopia (green-blind)

#003A78

Tritanopia (blue-blind)

#004953

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #243a79;
/* rgb */ color: rgb(36, 58, 121);
/* oklch */ color: oklch(36.8% 0.111 266.5);

Tailwind

colors: {
  custom: {
    50: '#6a6fa0',
    500: '#243a79',
    950: '#000000',
  },
}

SCSS

$custom: #243a79;
$custom-light: #6a6fa0;
$custom-dark: #000000;

JSON

{
  "hex": "#243a79",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 121
  },
  "hsl": {
    "h": 224.471,
    "s": 54.14,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36802,
    "c": 0.11094,
    "h": 266.5
  },
  "luminance": 0.04782
}

Semantic roles & 50–950 ramp

primary

#243A79

secondary

#AC934D

accent

#B74ADE

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #243A79

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

Preview Lab → · Contrast checker → · Palette generator →