#243D64#243D64

#243D64 is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.0% C 0.075 H 259.0°. Best body text is #FFFFFF at 10.90:1 contrast (WCAG AA passes).

Color values

HEX	#243D64
RGB	rgb(36, 61, 100)
HSL	hsl(217, 47%, 27%)
HSV	hsv(217, 64%, 39%)
CMYK	cmyk(64%, 39%, 0%, 60.8%)
CIE-LAB	lab(25.66, 3.90, -25.89)
CIE-LCH	lch(25.66, 26.18, 278.56°)
OKLab	oklab(36.02% -0.0143 -0.0734)
OKLCH	oklch(36.02% 0.075 259)
XYZ	xyz(4.6957, 4.6322, 12.7008)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D64 #644B24

analogous

#245D64 #243D64 #2B2464

triadic

#243D64 #64243D #3D6424

tetradic

#243D64 #64245D #644B24 #24642B

square

#243D64 #64245D #644B24 #24642B

split-complementary

#243D64 #642B24 #5D6424

monochromatic

#080E17 #142237 #243D64 #345891 #4674BC

Accessibility & contrast

On white

10.90

#243D64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#243D64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D64

10.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D64	#FFFFFF	#000000	##FFFFFF
##243D64	1.00	10.90	1.93	10.90
#FFFFFF	10.90	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4066

Deuteranopia (green-blind)

#243A63

Tritanopia (blue-blind)

#00464B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243d64;
/* rgb */ color: rgb(36, 61, 100);
/* oklch */ color: oklch(36.0% 0.075 259.0);

Tailwind

colors: {
  custom: {
    50: '#657290',
    500: '#243d64',
    950: '#000000',
  },
}

SCSS

$custom: #243d64;
$custom-light: #657290;
$custom-dark: #000000;

JSON

{
  "hex": "#243d64",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 100
  },
  "hsl": {
    "h": 216.563,
    "s": 47.059,
    "l": 26.667
  },
  "oklch": {
    "l": 0.36021,
    "c": 0.07477,
    "h": 259
  },
  "luminance": 0.04633
}

Semantic roles & 50–950 ramp

primary

#243D64

secondary

#977A4C

accent

#A351D7

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #243D64

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

Preview Lab → · Contrast checker → · Palette generator →