#243D88#243D88

#243D88 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.7% C 0.129 H 266.4°. Best body text is #FFFFFF at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#243D88
RGB	rgb(36, 61, 136)
HSL	hsl(225, 58%, 34%)
HSV	hsv(225, 74%, 53%)
CMYK	cmyk(73.5%, 55.1%, 0%, 46.7%)
CIE-LAB	lab(28.09, 17.94, -44.78)
CIE-LCH	lch(28.09, 48.24, 291.83°)
OKLab	oklab(38.66% -0.008 -0.1289)
OKLCH	oklch(38.66% 0.129 266.4)
XYZ	xyz(6.8387, 5.4894, 23.9869)
Luminance	0.0549 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243D88 #886F24

analogous

#246F88 #243D88 #3D2488

triadic

#243D88 #88243D #3D8824

tetradic

#243D88 #88246F #886F24 #24883D

square

#243D88 #88246F #886F24 #24883D

split-complementary

#243D88 #883D24 #6F8824

monochromatic

#0A1227 #172758 #243D88 #3153B8 #5574D2

Accessibility & contrast

On white

10.01

#243D88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#243D88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243D88

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243D88	#FFFFFF	#000000	##FFFFFF
##243D88	1.00	10.01	2.10	10.01
#FFFFFF	10.01	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05478B

Deuteranopia (green-blind)

#003E87

Tritanopia (blue-blind)

#004F5C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #243d88;
/* rgb */ color: rgb(36, 61, 136);
/* oklch */ color: oklch(38.7% 0.129 266.4);

Tailwind

colors: {
  custom: {
    50: '#6d72ab',
    500: '#243d88',
    950: '#000000',
  },
}

SCSS

$custom: #243d88;
$custom-light: #6d72ab;
$custom-dark: #000000;

JSON

{
  "hex": "#243d88",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 136
  },
  "hsl": {
    "h": 225,
    "s": 58.14,
    "l": 33.725
  },
  "oklch": {
    "l": 0.38659,
    "c": 0.12913,
    "h": 266.4
  },
  "luminance": 0.0549
}

Semantic roles & 50–950 ramp

primary

#243D88

secondary

#B69D52

accent

#BB46E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #243D88

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

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