#243B90#243B90

#243B90 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.9% C 0.143 H 267.6°. Best body text is #FFFFFF at 9.98:1 contrast (WCAG AA passes).

Color values

HEX	#243B90
RGB	rgb(36, 59, 144)
HSL	hsl(227, 60%, 35%)
HSV	hsv(227, 75%, 56%)
CMYK	cmyk(75%, 59%, 0%, 43.5%)
CIE-LAB	lab(28.16, 22.44, -49.61)
CIE-LCH	lch(28.16, 54.45, 294.34°)
OKLab	oklab(38.91% -0.0059 -0.1431)
OKLCH	oklch(38.91% 0.143 267.6)
XYZ	xyz(7.3238, 5.5158, 27.0588)
Luminance	0.0552 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B90 #907924

analogous

#247190 #243B90 #432490

triadic

#243B90 #90243B #3B9024

tetradic

#243B90 #902471 #907924 #249043

square

#243B90 #902471 #907924 #249043

split-complementary

#243B90 #904324 #719024

monochromatic

#0C132E #18275F #243B90 #304FC1 #5973D5

Accessibility & contrast

On white

9.98

#243B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#243B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B90

9.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B90	#FFFFFF	#000000	##FFFFFF
##243B90	1.00	9.98	2.10	9.98
#FFFFFF	9.98	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004893

Deuteranopia (green-blind)

#003E8E

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #243b90;
/* rgb */ color: rgb(36, 59, 144);
/* oklch */ color: oklch(38.9% 0.143 267.6);

Tailwind

colors: {
  custom: {
    50: '#6f70b1',
    500: '#243b90',
    950: '#000000',
  },
}

SCSS

$custom: #243b90;
$custom-light: #6f70b1;
$custom-dark: #000000;

JSON

{
  "hex": "#243b90",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 144
  },
  "hsl": {
    "h": 227.222,
    "s": 60,
    "l": 35.294
  },
  "oklch": {
    "l": 0.38911,
    "c": 0.14323,
    "h": 267.6
  },
  "luminance": 0.05517
}

Semantic roles & 50–950 ramp

primary

#243B90

secondary

#BAA556

accent

#C145E3

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#080711

muted

#7B7A80

Preview Lab

Preview with #243B90

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

Preview Lab → · Contrast checker → · Palette generator →