#243FA0#243FA0

#243FA0 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.1% C 0.160 H 267.0°. Best body text is #FFFFFF at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#243FA0
RGB	rgb(36, 63, 160)
HSL	hsl(227, 63%, 38%)
HSV	hsv(227, 78%, 63%)
CMYK	cmyk(77.5%, 60.6%, 0%, 37.3%)
CIE-LAB	lab(30.56, 25.91, -55.45)
CIE-LCH	lch(30.56, 61.21, 295.04°)
OKLab	oklab(41.12% -0.0084 -0.1602)
OKLCH	oklch(41.12% 0.16 267)
XYZ	xyz(8.8480, 6.4672, 34.0329)
Luminance	0.0647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243FA0 #A08524

analogous

#247DA0 #243FA0 #4724A0

triadic

#243FA0 #A0243F #3FA024

tetradic

#243FA0 #A0247D #A08524 #24A047

square

#243FA0 #A0247D #A08524 #24A047

split-complementary

#243FA0 #A04724 #7DA024

monochromatic

#0E183C #192B6E #243FA0 #3153D1 #637DDC

Accessibility & contrast

On white

9.16

#243FA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#243FA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243FA0

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243FA0	#FFFFFF	#000000	##FFFFFF
##243FA0	1.00	9.16	2.29	9.16
#FFFFFF	9.16	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA3

Deuteranopia (green-blind)

#00429E

Tritanopia (blue-blind)

#005869

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #243fa0;
/* rgb */ color: rgb(36, 63, 160);
/* oklch */ color: oklch(41.1% 0.160 267.0);

Tailwind

colors: {
  custom: {
    50: '#7373bd',
    500: '#243fa0',
    950: '#000000',
  },
}

SCSS

$custom: #243fa0;
$custom-light: #7373bd;
$custom-dark: #000000;

JSON

{
  "hex": "#243fa0",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 160
  },
  "hsl": {
    "h": 226.935,
    "s": 63.265,
    "l": 38.431
  },
  "oklch": {
    "l": 0.41121,
    "c": 0.16042,
    "h": 267
  },
  "luminance": 0.06468
}

Semantic roles & 50–950 ramp

primary

#243FA0

secondary

#C1AC5F

accent

#C241E6

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #243FA0

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

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