#243EA4#243EA4

#243EA4 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.167 H 267.3°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#243EA4
RGB	rgb(36, 62, 164)
HSL	hsl(228, 64%, 39%)
HSV	hsv(228, 78%, 64%)
CMYK	cmyk(78%, 62.2%, 0%, 35.7%)
CIE-LAB	lab(30.64, 28.11, -57.74)
CIE-LCH	lch(30.64, 64.22, 295.96°)
OKLab	oklab(41.28% -0.0078 -0.1669)
OKLCH	oklch(41.28% 0.167 267.3)
XYZ	xyz(9.1487, 6.4996, 35.8871)
Luminance	0.0650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243EA4 #A48A24

analogous

#247EA4 #243EA4 #4A24A4

triadic

#243EA4 #A4243E #3EA424

tetradic

#243EA4 #A4247E #A48A24 #24A44A

square

#243EA4 #A4247E #A48A24 #24A44A

split-complementary

#243EA4 #A44A24 #7EA424

monochromatic

#0E1840 #192B72 #243EA4 #3353D2 #657EDD

Accessibility & contrast

On white

9.13

#243EA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#243EA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243EA4

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243EA4	#FFFFFF	#000000	##FFFFFF
##243EA4	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA7

Deuteranopia (green-blind)

#0042A2

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #243ea4;
/* rgb */ color: rgb(36, 62, 164);
/* oklch */ color: oklch(41.3% 0.167 267.3);

Tailwind

colors: {
  custom: {
    50: '#7473c0',
    500: '#243ea4',
    950: '#000000',
  },
}

SCSS

$custom: #243ea4;
$custom-light: #7473c0;
$custom-dark: #000000;

JSON

{
  "hex": "#243ea4",
  "rgb": {
    "r": 36,
    "g": 62,
    "b": 164
  },
  "hsl": {
    "h": 227.813,
    "s": 64,
    "l": 39.216
  },
  "oklch": {
    "l": 0.41284,
    "c": 0.16711,
    "h": 267.3
  },
  "luminance": 0.06501
}

Semantic roles & 50–950 ramp

primary

#243EA4

secondary

#C3AF61

accent

#C541E7

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #243EA4

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

Preview Lab → · Contrast checker → · Palette generator →