#243C88#243C88

#243C88 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.4% C 0.130 H 266.9°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#243C88
RGB	rgb(36, 60, 136)
HSL	hsl(226, 58%, 34%)
HSV	hsv(226, 74%, 53%)
CMYK	cmyk(73.5%, 55.9%, 0%, 46.7%)
CIE-LAB	lab(27.80, 18.63, -45.24)
CIE-LCH	lch(27.80, 48.93, 292.38°)
OKLab	oklab(38.44% -0.0072 -0.1302)
OKLCH	oklch(38.44% 0.13 266.9)
XYZ	xyz(6.7858, 5.3837, 23.9693)
Luminance	0.0538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243C88 #887024

analogous

#246E88 #243C88 #3E2488

triadic

#243C88 #88243C #3C8824

tetradic

#243C88 #88246E #887024 #24883E

square

#243C88 #88246E #887024 #24883E

split-complementary

#243C88 #883E24 #6E8824

monochromatic

#0A1127 #172758 #243C88 #3151B8 #5573D2

Accessibility & contrast

On white

10.11

#243C88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#243C88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243C88

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243C88	#FFFFFF	#000000	##FFFFFF
##243C88	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468B

Deuteranopia (green-blind)

#003D86

Tritanopia (blue-blind)

#004E5C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #243c88;
/* rgb */ color: rgb(36, 60, 136);
/* oklch */ color: oklch(38.4% 0.130 266.9);

Tailwind

colors: {
  custom: {
    50: '#6d71ab',
    500: '#243c88',
    950: '#000000',
  },
}

SCSS

$custom: #243c88;
$custom-light: #6d71ab;
$custom-dark: #000000;

JSON

{
  "hex": "#243c88",
  "rgb": {
    "r": 36,
    "g": 60,
    "b": 136
  },
  "hsl": {
    "h": 225.6,
    "s": 58.14,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38444,
    "c": 0.13045,
    "h": 266.9
  },
  "luminance": 0.05384
}

Semantic roles & 50–950 ramp

primary

#243C88

secondary

#B69E52

accent

#BC46E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #243C88

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

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