#243B75#243B75

#243B75 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.7% C 0.104 H 265.4°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#243B75
RGB	rgb(36, 59, 117)
HSL	hsl(223, 53%, 30%)
HSV	hsv(223, 69%, 46%)
CMYK	cmyk(69.2%, 49.6%, 0%, 54.1%)
CIE-LAB	lab(26.12, 11.86, -36.04)
CIE-LCH	lch(26.12, 37.94, 288.22°)
OKLab	oklab(36.72% -0.0084 -0.1032)
OKLCH	oklch(36.72% 0.104 265.4)
XYZ	xyz(5.5013, 4.7868, 17.4602)
Luminance	0.0479 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243B75 #755E24

analogous

#246375 #243B75 #362475

triadic

#243B75 #75243B #3B7524

tetradic

#243B75 #752463 #755E24 #247536

square

#243B75 #752463 #755E24 #247536

split-complementary

#243B75 #753624 #637524

monochromatic

#070C17 #162346 #243B75 #3253A4 #4C6FC8

Accessibility & contrast

On white

10.73

#243B75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#243B75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243B75

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243B75	#FFFFFF	#000000	##FFFFFF
##243B75	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D4277

Deuteranopia (green-blind)

#0C3A74

Tritanopia (blue-blind)

#004852

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #243b75;
/* rgb */ color: rgb(36, 59, 117);
/* oklch */ color: oklch(36.7% 0.104 265.4);

Tailwind

colors: {
  custom: {
    50: '#69709d',
    500: '#243b75',
    950: '#000000',
  },
}

SCSS

$custom: #243b75;
$custom-light: #69709d;
$custom-dark: #000000;

JSON

{
  "hex": "#243b75",
  "rgb": {
    "r": 36,
    "g": 59,
    "b": 117
  },
  "hsl": {
    "h": 222.963,
    "s": 52.941,
    "l": 30
  },
  "oklch": {
    "l": 0.36724,
    "c": 0.10353,
    "h": 265.4
  },
  "luminance": 0.04787
}

Semantic roles & 50–950 ramp

primary

#243B75

secondary

#A88E4D

accent

#B34BDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #243B75

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

Preview Lab → · Contrast checker → · Palette generator →