#243B6F#243B6F

#243B6F is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.3% C 0.094 H 264.3°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#243B6F
RGB	rgb(36, 59, 111)
HSL	hsl(222, 51%, 29%)
HSV	hsv(222, 68%, 44%)
CMYK	cmyk(67.6%, 46.8%, 0%, 56.5%)
CIE-LAB	lab(25.71, 9.52, -32.87)
CIE-LCH	lch(25.71, 34.22, 286.15°)
OKLab	oklab(36.28% -0.0094 -0.0939)
OKLCH	oklch(36.28% 0.094 264.3)
XYZ	xyz(5.1598, 4.6502, 15.6615)
Luminance	0.0465 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B6F #6F5824

analogous

#24616F #243B6F #33246F

triadic

#243B6F #6F243B #3B6F24

tetradic

#243B6F #6F2461 #6F5824 #246F33

square

#243B6F #6F2461 #6F5824 #246F33

split-complementary

#243B6F #6F3324 #616F24

monochromatic

#070C17 #152241 #243B6F #33549D #496FC4

Accessibility & contrast

On white

10.88

#243B6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#243B6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B6F

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B6F	#FFFFFF	#000000	##FFFFFF
##243B6F	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224171

Deuteranopia (green-blind)

#163A6E

Tritanopia (blue-blind)

#00474F

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #243b6f;
/* rgb */ color: rgb(36, 59, 111);
/* oklch */ color: oklch(36.3% 0.094 264.3);

Tailwind

colors: {
  custom: {
    50: '#677099',
    500: '#243b6f',
    950: '#000000',
  },
}

SCSS

$custom: #243b6f;
$custom-light: #677099;
$custom-dark: #000000;

JSON

{
  "hex": "#243b6f",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 111
  },
  "hsl": {
    "h": 221.6,
    "s": 51.02,
    "l": 28.824
  },
  "oklch": {
    "l": 0.36284,
    "c": 0.09434,
    "h": 264.3
  },
  "luminance": 0.04651
}

Semantic roles & 50–950 ramp

primary

#243B6F

secondary

#A2884D

accent

#AF4DDA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #243B6F

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

Preview Lab → · Contrast checker → · Palette generator →