#243A7D#243A7D

#243A7D is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.117 H 266.9°. Best body text is #FFFFFF at 10.63:1 contrast (WCAG AA passes).

Color values

HEX	#243A7D
RGB	rgb(36, 58, 125)
HSL	hsl(225, 55%, 32%)
HSV	hsv(225, 71%, 49%)
CMYK	cmyk(71.2%, 53.6%, 0%, 51%)
CIE-LAB	lab(26.39, 15.70, -40.65)
CIE-LCH	lch(26.39, 43.57, 291.12°)
OKLab	oklab(37.12% -0.0063 -0.1168)
OKLCH	oklch(37.12% 0.117 266.9)
XYZ	xyz(5.9410, 4.8813, 20.0271)
Luminance	0.0488 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A7D #7D6724

analogous

#24677D #243A7D #3B247D

triadic

#243A7D #7D243A #3A7D24

tetradic

#243A7D #7D2467 #7D6724 #247D3B

square

#243A7D #7D2467 #7D6724 #247D3B

split-complementary

#243A7D #7D3B24 #677D24

monochromatic

#090E1E #16244D #243A7D #3250AD #4F6ECC

Accessibility & contrast

On white

10.63

#243A7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#243A7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A7D

10.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A7D	#FFFFFF	#000000	##FFFFFF
##243A7D	1.00	10.63	1.98	10.63
#FFFFFF	10.63	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10437F

Deuteranopia (green-blind)

#003B7C

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #243a7d;
/* rgb */ color: rgb(36, 58, 125);
/* oklch */ color: oklch(37.1% 0.117 266.9);

Tailwind

colors: {
  custom: {
    50: '#6a6fa3',
    500: '#243a7d',
    950: '#000000',
  },
}

SCSS

$custom: #243a7d;
$custom-light: #6a6fa3;
$custom-dark: #000000;

JSON

{
  "hex": "#243a7d",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 125
  },
  "hsl": {
    "h": 225.169,
    "s": 55.28,
    "l": 31.569
  },
  "oklch": {
    "l": 0.37117,
    "c": 0.11694,
    "h": 266.9
  },
  "luminance": 0.04882
}

Semantic roles & 50–950 ramp

primary

#243A7D

secondary

#AF974D

accent

#BA49DF

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #243A7D

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

Preview Lab → · Contrast checker → · Palette generator →