#243B7A#243B7A

#243B7A is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.111 H 266.1°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#243B7A
RGB	rgb(36, 59, 122)
HSL	hsl(224, 54%, 31%)
HSV	hsv(224, 70%, 48%)
CMYK	cmyk(70.5%, 51.6%, 0%, 52.2%)
CIE-LAB	lab(26.47, 13.82, -38.64)
CIE-LCH	lch(26.47, 41.03, 289.69°)
OKLab	oklab(37.1% -0.0076 -0.1108)
OKLCH	oklch(37.1% 0.111 266.1)
XYZ	xyz(5.8031, 4.9076, 19.0500)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B7A #7A6324

analogous

#24667A #243B7A #38247A

triadic

#243B7A #7A243B #3B7A24

tetradic

#243B7A #7A2466 #7A6324 #247A38

square

#243B7A #7A2466 #7A6324 #247A38

split-complementary

#243B7A #7A3824 #667A24

monochromatic

#080D1B #16244B #243B7A #3252A9 #4E6FCB

Accessibility & contrast

On white

10.60

#243B7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#243B7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B7A

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B7A	#FFFFFF	#000000	##FFFFFF
##243B7A	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18437C

Deuteranopia (green-blind)

#003B79

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #243b7a;
/* rgb */ color: rgb(36, 59, 122);
/* oklch */ color: oklch(37.1% 0.111 266.1);

Tailwind

colors: {
  custom: {
    50: '#6a70a1',
    500: '#243b7a',
    950: '#000000',
  },
}

SCSS

$custom: #243b7a;
$custom-light: #6a70a1;
$custom-dark: #000000;

JSON

{
  "hex": "#243b7a",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 122
  },
  "hsl": {
    "h": 223.953,
    "s": 54.43,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37105,
    "c": 0.11109,
    "h": 266.1
  },
  "luminance": 0.04908
}

Semantic roles & 50–950 ramp

primary

#243B7A

secondary

#AC934D

accent

#B64ADE

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #243B7A

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

Preview Lab → · Contrast checker → · Palette generator →