#243DA7#243DA7

#243DA7 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.4% C 0.172 H 267.6°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#243DA7
RGB	rgb(36, 61, 167)
HSL	hsl(229, 65%, 40%)
HSV	hsv(229, 78%, 65%)
CMYK	cmyk(78.4%, 63.5%, 0%, 34.5%)
CIE-LAB	lab(30.64, 29.92, -59.54)
CIE-LCH	lch(30.64, 66.63, 296.68°)
OKLab	oklab(41.37% -0.0072 -0.1722)
OKLCH	oklch(41.37% 0.172 267.6)
XYZ	xyz(9.3689, 6.5015, 37.3129)
Luminance	0.0650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243DA7 #A78E24

analogous

#247EA7 #243DA7 #4D24A7

triadic

#243DA7 #A7243D #3DA724

tetradic

#243DA7 #A7247E #A78E24 #24A74D

square

#243DA7 #A7247E #A78E24 #24A74D

split-complementary

#243DA7 #A74D24 #7EA724

monochromatic

#0E1842 #192B75 #243DA7 #3553D3 #677EDE

Accessibility & contrast

On white

9.13

#243DA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#243DA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243DA7

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243DA7	#FFFFFF	#000000	##FFFFFF
##243DA7	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EAA

Deuteranopia (green-blind)

#0042A5

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #243da7;
/* rgb */ color: rgb(36, 61, 167);
/* oklch */ color: oklch(41.4% 0.172 267.6);

Tailwind

colors: {
  custom: {
    50: '#7572c2',
    500: '#243da7',
    950: '#000000',
  },
}

SCSS

$custom: #243da7;
$custom-light: #7572c2;
$custom-dark: #000000;

JSON

{
  "hex": "#243da7",
  "rgb": {
    "r": 36,
    "g": 61,
    "b": 167
  },
  "hsl": {
    "h": 228.55,
    "s": 64.532,
    "l": 39.804
  },
  "oklch": {
    "l": 0.41369,
    "c": 0.17236,
    "h": 267.6
  },
  "luminance": 0.06503
}

Semantic roles & 50–950 ramp

primary

#243DA7

secondary

#C4B163

accent

#C840E8

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #243DA7

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

Preview Lab → · Contrast checker → · Palette generator →