#243A63#243A63

#243A63 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.2% C 0.077 H 261.9°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#243A63
RGB	rgb(36, 58, 99)
HSL	hsl(219, 47%, 26%)
HSV	hsv(219, 64%, 39%)
CMYK	cmyk(63.6%, 41.4%, 0%, 61.2%)
CIE-LAB	lab(24.64, 5.58, -26.85)
CIE-LCH	lch(24.64, 27.43, 281.74°)
OKLab	oklab(35.21% -0.0109 -0.0762)
OKLCH	oklch(35.21% 0.077 261.9)
XYZ	xyz(4.4920, 4.3016, 12.3955)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A63 #634D24

analogous

#245A63 #243A63 #2E2463

triadic

#243A63 #63243A #3A6324

tetradic

#243A63 #63245A #634D24 #24632E

square

#243A63 #63245A #634D24 #24632E

split-complementary

#243A63 #632E24 #5A6324

monochromatic

#080D16 #142036 #243A63 #345490 #466FBC

Accessibility & contrast

On white

11.29

#243A63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#243A63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A63

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A63	#FFFFFF	#000000	##FFFFFF
##243A63	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283E65

Deuteranopia (green-blind)

#203862

Tritanopia (blue-blind)

#004349

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #243a63;
/* rgb */ color: rgb(36, 58, 99);
/* oklch */ color: oklch(35.2% 0.077 261.9);

Tailwind

colors: {
  custom: {
    50: '#656f8f',
    500: '#243a63',
    950: '#000000',
  },
}

SCSS

$custom: #243a63;
$custom-light: #656f8f;
$custom-dark: #000000;

JSON

{
  "hex": "#243a63",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 99
  },
  "hsl": {
    "h": 219.048,
    "s": 46.667,
    "l": 26.471
  },
  "oklch": {
    "l": 0.35213,
    "c": 0.07701,
    "h": 261.9
  },
  "luminance": 0.04302
}

Semantic roles & 50–950 ramp

primary

#243A63

secondary

#967D4C

accent

#A851D6

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#06070C

muted

#7A7A7D

Preview Lab

Preview with #243A63

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

Preview Lab → · Contrast checker → · Palette generator →