#243B64#243B64

#243B64 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.5% C 0.077 H 261.2°. Best body text is #FFFFFF at 11.14:1 contrast (WCAG AA passes).

Color values

HEX	#243B64
RGB	rgb(36, 59, 100)
HSL	hsl(218, 47%, 27%)
HSV	hsv(218, 64%, 39%)
CMYK	cmyk(64%, 41%, 0%, 60.8%)
CIE-LAB	lab(25.02, 5.27, -26.90)
CIE-LCH	lch(25.02, 27.41, 281.09°)
OKLab	oklab(35.53% -0.0118 -0.0764)
OKLCH	oklch(35.53% 0.077 261.2)
XYZ	xyz(4.5910, 4.4227, 12.6659)
Luminance	0.0442 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B64 #644D24

analogous

#245B64 #243B64 #2D2464

triadic

#243B64 #64243B #3B6424

tetradic

#243B64 #64245B #644D24 #24642D

square

#243B64 #64245B #644D24 #24642D

split-complementary

#243B64 #642D24 #5B6424

monochromatic

#080D17 #142037 #243B64 #345691 #4671BC

Accessibility & contrast

On white

11.14

#243B64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#243B64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B64

11.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B64	#FFFFFF	#000000	##FFFFFF
##243B64	1.00	11.14	1.88	11.14
#FFFFFF	11.14	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#293F66

Deuteranopia (green-blind)

#213963

Tritanopia (blue-blind)

#00444A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #243b64;
/* rgb */ color: rgb(36, 59, 100);
/* oklch */ color: oklch(35.5% 0.077 261.2);

Tailwind

colors: {
  custom: {
    50: '#657090',
    500: '#243b64',
    950: '#000000',
  },
}

SCSS

$custom: #243b64;
$custom-light: #657090;
$custom-dark: #000000;

JSON

{
  "hex": "#243b64",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 100
  },
  "hsl": {
    "h": 218.438,
    "s": 47.059,
    "l": 26.667
  },
  "oklch": {
    "l": 0.35525,
    "c": 0.07728,
    "h": 261.2
  },
  "luminance": 0.04423
}

Semantic roles & 50–950 ramp

primary

#243B64

secondary

#977C4C

accent

#A751D7

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #243B64

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

Preview Lab → · Contrast checker → · Palette generator →