#243A87#243A87

#243A87 is a dark, vivid blue. Relative luminance 0.051; OKLCH L 37.9% C 0.132 H 267.6°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#243A87
RGB	rgb(36, 58, 135)
HSL	hsl(227, 58%, 34%)
HSV	hsv(227, 73%, 53%)
CMYK	cmyk(73.3%, 57%, 0%, 47.1%)
CIE-LAB	lab(27.16, 19.62, -45.67)
CIE-LCH	lch(27.16, 49.70, 293.25°)
OKLab	oklab(37.94% -0.0055 -0.1315)
OKLCH	oklch(37.94% 0.132 267.6)
XYZ	xyz(6.6123, 5.1498, 23.5625)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243A87 #877124

analogous

#246B87 #243A87 #3F2487

triadic

#243A87 #87243A #3A8724

tetradic

#243A87 #87246B #877124 #24873F

square

#243A87 #87246B #877124 #24873F

split-complementary

#243A87 #873F24 #6B8724

monochromatic

#0A1026 #172557 #243A87 #314FB7 #5470D1

Accessibility & contrast

On white

10.34

#243A87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#243A87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243A87

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243A87	#FFFFFF	#000000	##FFFFFF
##243A87	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00458A

Deuteranopia (green-blind)

#003C85

Tritanopia (blue-blind)

#004D5A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #243a87;
/* rgb */ color: rgb(36, 58, 135);
/* oklch */ color: oklch(37.9% 0.132 267.6);

Tailwind

colors: {
  custom: {
    50: '#6d6fab',
    500: '#243a87',
    950: '#000000',
  },
}

SCSS

$custom: #243a87;
$custom-light: #6d6fab;
$custom-dark: #000000;

JSON

{
  "hex": "#243a87",
  "rgb": {
    "r": 36,
    "g": 58,
    "b": 135
  },
  "hsl": {
    "h": 226.667,
    "s": 57.895,
    "l": 33.529
  },
  "oklch": {
    "l": 0.37935,
    "c": 0.13164,
    "h": 267.6
  },
  "luminance": 0.0515
}

Semantic roles & 50–950 ramp

primary

#243A87

secondary

#B59F51

accent

#BF47E1

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #243A87

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

Preview Lab → · Contrast checker → · Palette generator →