#243BA1#243BA1

#243BA1 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.4% C 0.167 H 268.0°. Best body text is #FFFFFF at 9.48:1 contrast (WCAG AA passes).

Color values

HEX	#243BA1
RGB	rgb(36, 59, 161)
HSL	hsl(229, 63%, 39%)
HSV	hsv(229, 78%, 63%)
CMYK	cmyk(77.6%, 63.4%, 0%, 36.9%)
CIE-LAB	lab(29.60, 28.97, -57.63)
CIE-LCH	lch(29.60, 64.50, 296.69°)
OKLab	oklab(40.44% -0.0058 -0.1666)
OKLCH	oklch(40.44% 0.167 268)
XYZ	xyz(8.7223, 6.0752, 34.4242)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243BA1 #A18A24

analogous

#2479A1 #243BA1 #4B24A1

triadic

#243BA1 #A1243B #3BA124

tetradic

#243BA1 #A12479 #A18A24 #24A14B

square

#243BA1 #A12479 #A18A24 #24A14B

split-complementary

#243BA1 #A14B24 #79A124

monochromatic

#0E163D #19296F #243BA1 #314FD1 #6379DC

Accessibility & contrast

On white

9.48

#243BA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#243BA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243BA1

9.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243BA1	#FFFFFF	#000000	##FFFFFF
##243BA1	1.00	9.48	2.22	9.48
#FFFFFF	9.48	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA4

Deuteranopia (green-blind)

#00409F

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #243ba1;
/* rgb */ color: rgb(36, 59, 161);
/* oklch */ color: oklch(40.4% 0.167 268.0);

Tailwind

colors: {
  custom: {
    50: '#7370be',
    500: '#243ba1',
    950: '#000000',
  },
}

SCSS

$custom: #243ba1;
$custom-light: #7370be;
$custom-dark: #000000;

JSON

{
  "hex": "#243ba1",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 161
  },
  "hsl": {
    "h": 228.96,
    "s": 63.452,
    "l": 38.627
  },
  "oklch": {
    "l": 0.40435,
    "c": 0.16673,
    "h": 268
  },
  "luminance": 0.06076
}

Semantic roles & 50–950 ramp

primary

#243BA1

secondary

#C2AF5F

accent

#C841E6

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #243BA1

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

Preview Lab → · Contrast checker → · Palette generator →