#243AA1#243AA1

#243AA1 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.168 H 268.2°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#243AA1
RGB	rgb(36, 58, 161)
HSL	hsl(229, 63%, 39%)
HSV	hsv(229, 78%, 63%)
CMYK	cmyk(77.6%, 64%, 0%, 36.9%)
CIE-LAB	lab(29.35, 29.64, -58.04)
CIE-LCH	lch(29.35, 65.17, 297.05°)
OKLab	oklab(40.25% -0.0052 -0.1679)
OKLCH	oklch(40.25% 0.168 268.2)
XYZ	xyz(8.6714, 5.9734, 34.4073)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243AA1 #A18B24

analogous

#2478A1 #243AA1 #4C24A1

triadic

#243AA1 #A1243A #3AA124

tetradic

#243AA1 #A12478 #A18B24 #24A14C

square

#243AA1 #A12478 #A18B24 #24A14C

split-complementary

#243AA1 #A14C24 #78A124

monochromatic

#0E163D #19286F #243AA1 #314DD1 #6379DC

Accessibility & contrast

On white

9.57

#243AA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#243AA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243AA1

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243AA1	#FFFFFF	#000000	##FFFFFF
##243AA1	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA4

Deuteranopia (green-blind)

#003F9F

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #243aa1;
/* rgb */ color: rgb(36, 58, 161);
/* oklch */ color: oklch(40.2% 0.168 268.2);

Tailwind

colors: {
  custom: {
    50: '#7370be',
    500: '#243aa1',
    950: '#000000',
  },
}

SCSS

$custom: #243aa1;
$custom-light: #7370be;
$custom-dark: #000000;

JSON

{
  "hex": "#243aa1",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 161
  },
  "hsl": {
    "h": 229.44,
    "s": 63.452,
    "l": 38.627
  },
  "oklch": {
    "l": 0.40246,
    "c": 0.16795,
    "h": 268.2
  },
  "luminance": 0.05974
}

Semantic roles & 50–950 ramp

primary

#243AA1

secondary

#C2B05F

accent

#C941E6

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #243AA1

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

Preview Lab → · Contrast checker → · Palette generator →