#243B7D#243B7D

#243B7D is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.116 H 266.4°. Best body text is #FFFFFF at 10.52:1 contrast (WCAG AA passes).

Color values

HEX	#243B7D
RGB	rgb(36, 59, 125)
HSL	hsl(224, 55%, 32%)
HSV	hsv(224, 71%, 49%)
CMYK	cmyk(71.2%, 52.8%, 0%, 51%)
CIE-LAB	lab(26.69, 15.00, -40.18)
CIE-LCH	lch(26.69, 42.89, 290.48°)
OKLab	oklab(37.34% -0.0073 -0.1154)
OKLCH	oklch(37.34% 0.116 266.4)
XYZ	xyz(5.9919, 4.9831, 20.0441)
Luminance	0.0498 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B7D #7D6624

analogous

#24687D #243B7D #39247D

triadic

#243B7D #7D243B #3B7D24

tetradic

#243B7D #7D2468 #7D6624 #247D39

square

#243B7D #7D2468 #7D6624 #247D39

split-complementary

#243B7D #7D3924 #687D24

monochromatic

#090E1E #16254D #243B7D #3251AD #4F6FCC

Accessibility & contrast

On white

10.52

#243B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#243B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B7D

10.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B7D	#FFFFFF	#000000	##FFFFFF
##243B7D	1.00	10.52	2.00	10.52
#FFFFFF	10.52	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13437F

Deuteranopia (green-blind)

#003B7C

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243b7d;
/* rgb */ color: rgb(36, 59, 125);
/* oklch */ color: oklch(37.3% 0.116 266.4);

Tailwind

colors: {
  custom: {
    50: '#6a70a3',
    500: '#243b7d',
    950: '#000000',
  },
}

SCSS

$custom: #243b7d;
$custom-light: #6a70a3;
$custom-dark: #000000;

JSON

{
  "hex": "#243b7d",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 125
  },
  "hsl": {
    "h": 224.494,
    "s": 55.28,
    "l": 31.569
  },
  "oklch": {
    "l": 0.37339,
    "c": 0.11559,
    "h": 266.4
  },
  "luminance": 0.04984
}

Semantic roles & 50–950 ramp

primary

#243B7D

secondary

#AF964D

accent

#B849DF

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #243B7D

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

Preview Lab → · Contrast checker → · Palette generator →