#1840A7#1840A7

#1840A7 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.5% C 0.172 H 264.0°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#1840A7
RGB	rgb(24, 64, 167)
HSL	hsl(223, 75%, 37%)
HSV	hsv(223, 86%, 65%)
CMYK	cmyk(85.6%, 61.7%, 0%, 34.5%)
CIE-LAB	lab(31.00, 26.86, -58.98)
CIE-LCH	lch(31.00, 64.81, 294.48°)
OKLab	oklab(41.51% -0.0178 -0.1707)
OKLCH	oklch(41.51% 0.172 264)
XYZ	xyz(9.1826, 6.6499, 37.3513)
Luminance	0.0665 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1840A7 #A77F18

analogous

#1887A7 #1840A7 #3818A7

triadic

#1840A7 #A71840 #40A718

tetradic

#1840A7 #A71887 #A77F18 #18A738

square

#1840A7 #A71887 #A77F18 #18A738

split-complementary

#1840A7 #A73818 #87A718

monochromatic

#09173C #102B71 #1840A7 #2055DD #537CE6

Accessibility & contrast

On white

9.01

#1840A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1840A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1840A7

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1840A7	#FFFFFF	#000000	##FFFFFF
##1840A7	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AA

Deuteranopia (green-blind)

#0043A5

Tritanopia (blue-blind)

#005B6D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1840a7;
/* rgb */ color: rgb(24, 64, 167);
/* oklch */ color: oklch(41.5% 0.172 264.0);

Tailwind

colors: {
  custom: {
    50: '#7174c2',
    500: '#1840a7',
    950: '#000000',
  },
}

SCSS

$custom: #1840a7;
$custom-light: #7174c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1840a7",
  "rgb": {
    "r": 24,
    "g": 64,
    "b": 167
  },
  "hsl": {
    "h": 223.217,
    "s": 74.869,
    "l": 37.451
  },
  "oklch": {
    "l": 0.4151,
    "c": 0.17165,
    "h": 264
  },
  "luminance": 0.06651
}

Semantic roles & 50–950 ramp

primary

#1840A7

secondary

#C9A852

accent

#BD36F1

background

#F7F7FC

surface

#EDEDF8

border

#C8C8D1

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1840A7

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

Preview Lab → · Contrast checker → · Palette generator →