#242F8B#242F8B

#242F8B is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.1% C 0.151 H 271.2°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#242F8B
RGB	rgb(36, 47, 139)
HSL	hsl(234, 59%, 34%)
HSV	hsv(234, 74%, 55%)
CMYK	cmyk(74.1%, 66.2%, 0%, 45.5%)
CIE-LAB	lab(24.55, 28.66, -52.41)
CIE-LCH	lch(24.55, 59.73, 298.68°)
OKLab	oklab(36.1% 0.0031 -0.1514)
OKLCH	oklch(36.1% 0.151 271.2)
XYZ	xyz(6.4027, 4.2715, 24.9081)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#242F8B #8B8024

analogous

#24638B #242F8B #4D248B

triadic

#242F8B #8B242F #2F8B24

tetradic

#242F8B #8B2463 #8B8024 #248B4D

square

#242F8B #8B2463 #8B8024 #248B4D

split-complementary

#242F8B #8B4D24 #638B24

monochromatic

#0B0E2A #171F5A #242F8B #313FBC #5663D3

Accessibility & contrast

On white

11.32

#242F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#242F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #242F8B

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##242F8B	#FFFFFF	#000000	##FFFFFF
##242F8B	1.00	11.32	1.85	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8E

Deuteranopia (green-blind)

#003689

Tritanopia (blue-blind)

#004758

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #242f8b;
/* rgb */ color: rgb(36, 47, 139);
/* oklch */ color: oklch(36.1% 0.151 271.2);

Tailwind

colors: {
  custom: {
    50: '#6f67ae',
    500: '#242f8b',
    950: '#000000',
  },
}

SCSS

$custom: #242f8b;
$custom-light: #6f67ae;
$custom-dark: #000000;

JSON

{
  "hex": "#242f8b",
  "rgb": {
    "r": 36,
    "g": 47,
    "b": 139
  },
  "hsl": {
    "h": 233.592,
    "s": 58.857,
    "l": 34.314
  },
  "oklch": {
    "l": 0.36105,
    "c": 0.15147,
    "h": 271.2
  },
  "luminance": 0.04272
}

Semantic roles & 50–950 ramp

primary

#242F8B

secondary

#B7AD53

accent

#D146E2

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #242F8B

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

Preview Lab → · Contrast checker → · Palette generator →