#243AA8#243AA8

#243AA8 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.9% C 0.177 H 268.2°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#243AA8
RGB	rgb(36, 58, 168)
HSL	hsl(230, 65%, 40%)
HSV	hsv(230, 79%, 66%)
CMYK	cmyk(78.6%, 65.5%, 0%, 34.1%)
CIE-LAB	lab(29.98, 32.27, -61.23)
CIE-LCH	lch(29.98, 69.21, 297.79°)
OKLab	oklab(40.91% -0.0054 -0.1772)
OKLCH	oklch(40.91% 0.177 268.2)
XYZ	xyz(9.3060, 6.2273, 37.7497)
Luminance	0.0623 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243AA8 #A89224

analogous

#247CA8 #243AA8 #5024A8

triadic

#243AA8 #A8243A #3AA824

tetradic

#243AA8 #A8247C #A89224 #24A850

square

#243AA8 #A8247C #A89224 #24A850

split-complementary

#243AA8 #A85024 #7CA824

monochromatic

#0E1743 #192976 #243AA8 #3550D4 #687CDF

Accessibility & contrast

On white

9.35

#243AA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#243AA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243AA8

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243AA8	#FFFFFF	#000000	##FFFFFF
##243AA8	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAB

Deuteranopia (green-blind)

#0040A6

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #243aa8;
/* rgb */ color: rgb(36, 58, 168);
/* oklch */ color: oklch(40.9% 0.177 268.2);

Tailwind

colors: {
  custom: {
    50: '#7570c3',
    500: '#243aa8',
    950: '#000000',
  },
}

SCSS

$custom: #243aa8;
$custom-light: #7570c3;
$custom-dark: #000000;

JSON

{
  "hex": "#243aa8",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 168
  },
  "hsl": {
    "h": 230,
    "s": 64.706,
    "l": 40
  },
  "oklch": {
    "l": 0.40907,
    "c": 0.17726,
    "h": 268.2
  },
  "luminance": 0.06228
}

Semantic roles & 50–950 ramp

primary

#243AA8

secondary

#C4B463

accent

#CC40E8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #243AA8

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

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