#243AA7#243AA7

#243AA7 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.8% C 0.176 H 268.2°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#243AA7
RGB	rgb(36, 58, 167)
HSL	hsl(230, 65%, 40%)
HSV	hsv(230, 78%, 65%)
CMYK	cmyk(78.4%, 65.3%, 0%, 34.5%)
CIE-LAB	lab(29.89, 31.89, -60.78)
CIE-LCH	lch(29.89, 68.64, 297.69°)
OKLab	oklab(40.81% -0.0054 -0.1759)
OKLCH	oklch(40.81% 0.176 268.2)
XYZ	xyz(9.2132, 6.1902, 37.2610)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243AA7 #A79124

analogous

#247BA7 #243AA7 #5024A7

triadic

#243AA7 #A7243A #3AA724

tetradic

#243AA7 #A7247B #A79124 #24A750

square

#243AA7 #A7247B #A79124 #24A750

split-complementary

#243AA7 #A75024 #7BA724

monochromatic

#0E1742 #192975 #243AA7 #354FD3 #677BDE

Accessibility & contrast

On white

9.38

#243AA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#243AA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243AA7

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243AA7	#FFFFFF	#000000	##FFFFFF
##243AA7	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAA

Deuteranopia (green-blind)

#0040A5

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #243aa7;
/* rgb */ color: rgb(36, 58, 167);
/* oklch */ color: oklch(40.8% 0.176 268.2);

Tailwind

colors: {
  custom: {
    50: '#7570c2',
    500: '#243aa7',
    950: '#000000',
  },
}

SCSS

$custom: #243aa7;
$custom-light: #7570c2;
$custom-dark: #000000;

JSON

{
  "hex": "#243aa7",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 167
  },
  "hsl": {
    "h": 229.924,
    "s": 64.532,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40811,
    "c": 0.17594,
    "h": 268.2
  },
  "luminance": 0.06191
}

Semantic roles & 50–950 ramp

primary

#243AA7

secondary

#C4B463

accent

#CB40E8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #243AA7

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

Preview Lab → · Contrast checker → · Palette generator →