#243EA7#243EA7

#243EA7 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.6% C 0.171 H 267.4°. Best body text is #FFFFFF at 9.04:1 contrast (WCAG AA passes).

Color values

HEX	#243EA7
RGB	rgb(36, 62, 167)
HSL	hsl(228, 65%, 40%)
HSV	hsv(228, 78%, 65%)
CMYK	cmyk(78.4%, 62.9%, 0%, 34.5%)
CIE-LAB	lab(30.90, 29.25, -59.12)
CIE-LCH	lch(30.90, 65.96, 296.33°)
OKLab	oklab(41.56% -0.0078 -0.171)
OKLCH	oklch(41.56% 0.171 267.4)
XYZ	xyz(9.4228, 6.6093, 37.3308)
Luminance	0.0661 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243EA7 #A78D24

analogous

#247FA7 #243EA7 #4C24A7

triadic

#243EA7 #A7243E #3EA724

tetradic

#243EA7 #A7247F #A78D24 #24A74C

square

#243EA7 #A7247F #A78D24 #24A74C

split-complementary

#243EA7 #A74C24 #7FA724

monochromatic

#0E1942 #192B75 #243EA7 #3554D3 #677FDE

Accessibility & contrast

On white

9.04

#243EA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#243EA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243EA7

9.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243EA7	#FFFFFF	#000000	##FFFFFF
##243EA7	1.00	9.04	2.32	9.04
#FFFFFF	9.04	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAA

Deuteranopia (green-blind)

#0043A5

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #243ea7;
/* rgb */ color: rgb(36, 62, 167);
/* oklch */ color: oklch(41.6% 0.171 267.4);

Tailwind

colors: {
  custom: {
    50: '#7473c2',
    500: '#243ea7',
    950: '#000000',
  },
}

SCSS

$custom: #243ea7;
$custom-light: #7473c2;
$custom-dark: #000000;

JSON

{
  "hex": "#243ea7",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 167
  },
  "hsl": {
    "h": 228.092,
    "s": 64.532,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41558,
    "c": 0.17115,
    "h": 267.4
  },
  "luminance": 0.0661
}

Semantic roles & 50–950 ramp

primary

#243EA7

secondary

#C4B163

accent

#C640E8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #243EA7

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

Preview Lab → · Contrast checker → · Palette generator →