#243B6A#243B6A

#243B6A is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.9% C 0.087 H 263.1°. Best body text is #FFFFFF at 11.00:1 contrast (WCAG AA passes).

Color values

HEX	#243B6A
RGB	rgb(36, 59, 106)
HSL	hsl(220, 49%, 28%)
HSV	hsv(220, 66%, 42%)
CMYK	cmyk(66%, 44.3%, 0%, 58.4%)
CIE-LAB	lab(25.39, 7.58, -30.18)
CIE-LCH	lch(25.39, 31.12, 284.09°)
OKLab	oklab(35.93% -0.0104 -0.086)
OKLCH	oklch(35.93% 0.087 263.1)
XYZ	xyz(4.8921, 4.5432, 14.2520)
Luminance	0.0454 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B6A #6A5324

analogous

#245E6A #243B6A #30246A

triadic

#243B6A #6A243B #3B6A24

tetradic

#243B6A #6A245E #6A5324 #246A30

square

#243B6A #6A245E #6A5324 #246A30

split-complementary

#243B6A #6A3024 #5E6A24

monochromatic

#080D17 #14223C #243B6A #345498 #486FC1

Accessibility & contrast

On white

11.00

#243B6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#243B6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B6A

11.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B6A	#FFFFFF	#000000	##FFFFFF
##243B6A	1.00	11.00	1.91	11.00
#FFFFFF	11.00	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#26406C

Deuteranopia (green-blind)

#1B3969

Tritanopia (blue-blind)

#00464D

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #243b6a;
/* rgb */ color: rgb(36, 59, 106);
/* oklch */ color: oklch(35.9% 0.087 263.1);

Tailwind

colors: {
  custom: {
    50: '#667095',
    500: '#243b6a',
    950: '#000000',
  },
}

SCSS

$custom: #243b6a;
$custom-light: #667095;
$custom-dark: #000000;

JSON

{
  "hex": "#243b6a",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 106
  },
  "hsl": {
    "h": 220.286,
    "s": 49.296,
    "l": 27.843
  },
  "oklch": {
    "l": 0.35931,
    "c": 0.08661,
    "h": 263.1
  },
  "luminance": 0.04544
}

Semantic roles & 50–950 ramp

primary

#243B6A

secondary

#9D834D

accent

#AC4FD9

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #243B6A

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

Preview Lab → · Contrast checker → · Palette generator →