#243A9A#243A9A

#243A9A is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.6% C 0.158 H 268.2°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#243A9A
RGB	rgb(36, 58, 154)
HSL	hsl(229, 62%, 37%)
HSV	hsv(229, 77%, 60%)
CMYK	cmyk(76.6%, 62.3%, 0%, 39.6%)
CIE-LAB	lab(28.73, 26.97, -54.80)
CIE-LCH	lch(28.73, 61.08, 296.21°)
OKLab	oklab(39.6% -0.005 -0.1584)
OKLCH	oklch(39.6% 0.158 268.2)
XYZ	xyz(8.0713, 5.7334, 31.2469)
Luminance	0.0573 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A9A #9A8424

analogous

#24759A #243A9A #49249A

triadic

#243A9A #9A243A #3A9A24

tetradic

#243A9A #9A2475 #9A8424 #249A49

square

#243A9A #9A2475 #9A8424 #249A49

split-complementary

#243A9A #9A4924 #759A24

monochromatic

#0D1537 #182768 #243A9A #304DCC #5F76DA

Accessibility & contrast

On white

9.78

#243A9A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#243A9A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A9A

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A9A	#FFFFFF	#000000	##FFFFFF
##243A9A	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499D

Deuteranopia (green-blind)

#003E98

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #243a9a;
/* rgb */ color: rgb(36, 58, 154);
/* oklch */ color: oklch(39.6% 0.158 268.2);

Tailwind

colors: {
  custom: {
    50: '#7170b9',
    500: '#243a9a',
    950: '#000000',
  },
}

SCSS

$custom: #243a9a;
$custom-light: #7170b9;
$custom-dark: #000000;

JSON

{
  "hex": "#243a9a",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 154
  },
  "hsl": {
    "h": 228.814,
    "s": 62.105,
    "l": 37.255
  },
  "oklch": {
    "l": 0.396,
    "c": 0.15844,
    "h": 268.2
  },
  "luminance": 0.05734
}

Semantic roles & 50–950 ramp

primary

#243A9A

secondary

#BFAC5B

accent

#C743E5

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #243A9A

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

Preview Lab → · Contrast checker → · Palette generator →