#243D9F#243D9F

#243D9F is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.162 H 267.5°. Best body text is #FFFFFF at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#243D9F
RGB	rgb(36, 61, 159)
HSL	hsl(228, 63%, 38%)
HSV	hsv(228, 77%, 62%)
CMYK	cmyk(77.4%, 61.6%, 0%, 37.6%)
CIE-LAB	lab(29.95, 26.87, -55.85)
CIE-LCH	lch(29.95, 61.98, 295.69°)
OKLab	oklab(40.64% -0.0071 -0.1614)
OKLCH	oklch(40.64% 0.162 267.5)
XYZ	xyz(8.6521, 6.2148, 33.5377)
Luminance	0.0622 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D9F #9F8624

analogous

#247A9F #243D9F #48249F

triadic

#243D9F #9F243D #3D9F24

tetradic

#243D9F #9F247A #9F8624 #249F48

square

#243D9F #9F247A #9F8624 #249F48

split-complementary

#243D9F #9F4824 #7A9F24

monochromatic

#0D173B #192A6D #243D9F #3051D0 #627BDB

Accessibility & contrast

On white

9.36

#243D9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#243D9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D9F

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D9F	#FFFFFF	#000000	##FFFFFF
##243D9F	1.00	9.36	2.24	9.36
#FFFFFF	9.36	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA2

Deuteranopia (green-blind)

#00419D

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #243d9f;
/* rgb */ color: rgb(36, 61, 159);
/* oklch */ color: oklch(40.6% 0.162 267.5);

Tailwind

colors: {
  custom: {
    50: '#7372bc',
    500: '#243d9f',
    950: '#000000',
  },
}

SCSS

$custom: #243d9f;
$custom-light: #7372bc;
$custom-dark: #000000;

JSON

{
  "hex": "#243d9f",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 159
  },
  "hsl": {
    "h": 227.805,
    "s": 63.077,
    "l": 38.235
  },
  "oklch": {
    "l": 0.40638,
    "c": 0.16155,
    "h": 267.5
  },
  "luminance": 0.06216
}

Semantic roles & 50–950 ramp

primary

#243D9F

secondary

#C1AD5E

accent

#C542E6

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #243D9F

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

Preview Lab → · Contrast checker → · Palette generator →