#243F91#243F91

#243F91 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.8% C 0.139 H 266.3°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#243F91
RGB	rgb(36, 63, 145)
HSL	hsl(225, 60%, 35%)
HSV	hsv(225, 75%, 57%)
CMYK	cmyk(75.2%, 56.6%, 0%, 43.1%)
CIE-LAB	lab(29.35, 20.09, -48.29)
CIE-LCH	lch(29.35, 52.30, 292.58°)
OKLab	oklab(39.83% -0.009 -0.1392)
OKLCH	oklch(39.83% 0.139 266.3)
XYZ	xyz(7.6141, 5.9736, 27.5343)
Luminance	0.0597 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F91 #917624

analogous

#247591 #243F91 #402491

triadic

#243F91 #91243F #3F9124

tetradic

#243F91 #912475 #917624 #249140

square

#243F91 #912475 #917624 #249140

split-complementary

#243F91 #914024 #759124

monochromatic

#0C142F #182A60 #243F91 #3054C2 #5978D6

Accessibility & contrast

On white

9.57

#243F91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#243F91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F91

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F91	#FFFFFF	#000000	##FFFFFF
##243F91	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A94

Deuteranopia (green-blind)

#00408F

Tritanopia (blue-blind)

#005361

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #243f91;
/* rgb */ color: rgb(36, 63, 145);
/* oklch */ color: oklch(39.8% 0.139 266.3);

Tailwind

colors: {
  custom: {
    50: '#6f73b2',
    500: '#243f91',
    950: '#000000',
  },
}

SCSS

$custom: #243f91;
$custom-light: #6f73b2;
$custom-dark: #000000;

JSON

{
  "hex": "#243f91",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 145
  },
  "hsl": {
    "h": 225.138,
    "s": 60.221,
    "l": 35.49
  },
  "oklch": {
    "l": 0.39829,
    "c": 0.13946,
    "h": 266.3
  },
  "luminance": 0.05974
}

Semantic roles & 50–950 ramp

primary

#243F91

secondary

#BAA256

accent

#BC44E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080811

muted

#7B7B80

Preview Lab

Preview with #243F91

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

Preview Lab → · Contrast checker → · Palette generator →