#243B7F#243B7F

#243B7F is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.5% C 0.119 H 266.6°. Best body text is #FFFFFF at 10.46:1 contrast (WCAG AA passes).

Color values

HEX	#243B7F
RGB	rgb(36, 59, 127)
HSL	hsl(225, 56%, 32%)
HSV	hsv(225, 72%, 50%)
CMYK	cmyk(71.7%, 53.5%, 0%, 50.2%)
CIE-LAB	lab(26.83, 15.79, -41.19)
CIE-LCH	lch(26.83, 44.12, 290.97°)
OKLab	oklab(37.5% -0.0071 -0.1184)
OKLCH	oklch(37.5% 0.119 266.6)
XYZ	xyz(6.1210, 5.0347, 20.7238)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B7F #7F6824

analogous

#24697F #243B7F #3B247F

triadic

#243B7F #7F243B #3B7F24

tetradic

#243B7F #7F2469 #7F6824 #247F3B

square

#243B7F #7F2469 #7F6824 #247F3B

split-complementary

#243B7F #7F3B24 #697F24

monochromatic

#090F20 #16254F #243B7F #3251AF #5070CD

Accessibility & contrast

On white

10.46

#243B7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#243B7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B7F

10.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B7F	#FFFFFF	#000000	##FFFFFF
##243B7F	1.00	10.46	2.01	10.46
#FFFFFF	10.46	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#104481

Deuteranopia (green-blind)

#003B7E

Tritanopia (blue-blind)

#004B57

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243b7f;
/* rgb */ color: rgb(36, 59, 127);
/* oklch */ color: oklch(37.5% 0.119 266.6);

Tailwind

colors: {
  custom: {
    50: '#6b70a5',
    500: '#243b7f',
    950: '#000000',
  },
}

SCSS

$custom: #243b7f;
$custom-light: #6b70a5;
$custom-dark: #000000;

JSON

{
  "hex": "#243b7f",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 127
  },
  "hsl": {
    "h": 224.835,
    "s": 55.828,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37497,
    "c": 0.11857,
    "h": 266.6
  },
  "luminance": 0.05035
}

Semantic roles & 50–950 ramp

primary

#243B7F

secondary

#B1984E

accent

#B949DF

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #243B7F

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

Preview Lab → · Contrast checker → · Palette generator →