#243F89#243F89

#243F89 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.2% C 0.128 H 265.7°. Best body text is #FFFFFF at 9.78:1 contrast (WCAG AA passes).

Color values

HEX	#243F89
RGB	rgb(36, 63, 137)
HSL	hsl(224, 58%, 34%)
HSV	hsv(224, 74%, 54%)
CMYK	cmyk(73.7%, 54%, 0%, 46.3%)
CIE-LAB	lab(28.74, 16.95, -44.35)
CIE-LCH	lch(28.74, 47.48, 290.91°)
OKLab	oklab(39.17% -0.0097 -0.1276)
OKLCH	oklch(39.17% 0.128 265.7)
XYZ	xyz(7.0188, 5.7355, 24.3992)
Luminance	0.0574 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#243F89 #896E24

analogous

#247289 #243F89 #3B2489

triadic

#243F89 #89243F #3F8924

tetradic

#243F89 #892472 #896E24 #24893B

square

#243F89 #892472 #896E24 #24893B

split-complementary

#243F89 #893B24 #728924

monochromatic

#0B1228 #172959 #243F89 #3155B9 #5577D2

Accessibility & contrast

On white

9.78

#243F89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#243F89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #243F89

9.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##243F89	#FFFFFF	#000000	##FFFFFF
##243F89	1.00	9.78	2.15	9.78
#FFFFFF	9.78	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C498C

Deuteranopia (green-blind)

#003F88

Tritanopia (blue-blind)

#00515D

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #243f89;
/* rgb */ color: rgb(36, 63, 137);
/* oklch */ color: oklch(39.2% 0.128 265.7);

Tailwind

colors: {
  custom: {
    50: '#6d73ac',
    500: '#243f89',
    950: '#000000',
  },
}

SCSS

$custom: #243f89;
$custom-light: #6d73ac;
$custom-dark: #000000;

JSON

{
  "hex": "#243f89",
  "rgb": {
    "r": 36,
    "g": 63,
    "b": 137
  },
  "hsl": {
    "h": 223.96,
    "s": 58.382,
    "l": 33.922
  },
  "oklch": {
    "l": 0.39175,
    "c": 0.12794,
    "h": 265.7
  },
  "luminance": 0.05736
}

Semantic roles & 50–950 ramp

primary

#243F89

secondary

#B79C52

accent

#B846E2

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #243F89

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

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