#243C64#243C64

#243C64 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.8% C 0.076 H 260.1°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#243C64
RGB	rgb(36, 60, 100)
HSL	hsl(218, 47%, 27%)
HSV	hsv(218, 64%, 39%)
CMYK	cmyk(64%, 40%, 0%, 60.8%)
CIE-LAB	lab(25.34, 4.58, -26.40)
CIE-LCH	lch(25.34, 26.79, 279.85°)
OKLab	oklab(35.77% -0.0131 -0.0749)
OKLCH	oklch(35.77% 0.076 260.1)
XYZ	xyz(4.6429, 4.5265, 12.6831)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C64 #644C24

analogous

#245C64 #243C64 #2C2464

triadic

#243C64 #64243C #3C6424

tetradic

#243C64 #64245C #644C24 #24642C

square

#243C64 #64245C #644C24 #24642C

split-complementary

#243C64 #642C24 #5C6424

monochromatic

#080D17 #142137 #243C64 #345791 #4672BC

Accessibility & contrast

On white

11.02

#243C64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#243C64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C64

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C64	#FFFFFF	#000000	##FFFFFF
##243C64	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3F66

Deuteranopia (green-blind)

#223963

Tritanopia (blue-blind)

#00454B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #243c64;
/* rgb */ color: rgb(36, 60, 100);
/* oklch */ color: oklch(35.8% 0.076 260.1);

Tailwind

colors: {
  custom: {
    50: '#657190',
    500: '#243c64',
    950: '#000000',
  },
}

SCSS

$custom: #243c64;
$custom-light: #657190;
$custom-dark: #000000;

JSON

{
  "hex": "#243c64",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 100
  },
  "hsl": {
    "h": 217.5,
    "s": 47.059,
    "l": 26.667
  },
  "oklch": {
    "l": 0.35772,
    "c": 0.07601,
    "h": 260.1
  },
  "luminance": 0.04527
}

Semantic roles & 50–950 ramp

primary

#243C64

secondary

#977B4C

accent

#A551D7

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #243C64

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

Preview Lab → · Contrast checker → · Palette generator →