#243BA7#243BA7

#243BA7 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.0% C 0.175 H 268.0°. Best body text is #FFFFFF at 9.30:1 contrast (WCAG AA passes).

Color values

HEX	#243BA7
RGB	rgb(36, 59, 167)
HSL	hsl(229, 65%, 40%)
HSV	hsv(229, 78%, 65%)
CMYK	cmyk(78.4%, 64.7%, 0%, 34.5%)
CIE-LAB	lab(30.14, 31.24, -60.37)
CIE-LCH	lch(30.14, 67.97, 297.36°)
OKLab	oklab(41% -0.006 -0.1746)
OKLCH	oklch(41% 0.175 268)
XYZ	xyz(9.2641, 6.2920, 37.2779)
Luminance	0.0629 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243BA7 #A79024

analogous

#247CA7 #243BA7 #4F24A7

triadic

#243BA7 #A7243B #3BA724

tetradic

#243BA7 #A7247C #A79024 #24A74F

square

#243BA7 #A7247C #A79024 #24A74F

split-complementary

#243BA7 #A74F24 #7CA724

monochromatic

#0E1742 #192975 #243BA7 #3551D3 #677CDE

Accessibility & contrast

On white

9.30

#243BA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#243BA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243BA7

9.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243BA7	#FFFFFF	#000000	##FFFFFF
##243BA7	1.00	9.30	2.26	9.30
#FFFFFF	9.30	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAA

Deuteranopia (green-blind)

#0041A5

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #243ba7;
/* rgb */ color: rgb(36, 59, 167);
/* oklch */ color: oklch(41.0% 0.175 268.0);

Tailwind

colors: {
  custom: {
    50: '#7570c2',
    500: '#243ba7',
    950: '#000000',
  },
}

SCSS

$custom: #243ba7;
$custom-light: #7570c2;
$custom-dark: #000000;

JSON

{
  "hex": "#243ba7",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 167
  },
  "hsl": {
    "h": 229.466,
    "s": 64.532,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40995,
    "c": 0.17475,
    "h": 268
  },
  "luminance": 0.06293
}

Semantic roles & 50–950 ramp

primary

#243BA7

secondary

#C4B363

accent

#CA40E8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #243BA7

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

Preview Lab → · Contrast checker → · Palette generator →