#1841B4#1841B4

#1841B4 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 42.9% C 0.188 H 264.4°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#1841B4
RGB	rgb(24, 65, 180)
HSL	hsl(224, 76%, 40%)
HSV	hsv(224, 87%, 71%)
CMYK	cmyk(86.7%, 63.9%, 0%, 29.4%)
CIE-LAB	lab(32.41, 31.26, -64.42)
CIE-LCH	lch(32.41, 71.60, 295.89°)
OKLab	oklab(42.92% -0.0182 -0.1866)
OKLCH	oklch(42.92% 0.188 264.4)
XYZ	xyz(10.5023, 7.2687, 44.0206)
Luminance	0.0727 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1841B4 #B48B18

analogous

#188FB4 #1841B4 #3D18B4

triadic

#1841B4 #B41841 #41B418

tetradic

#1841B4 #B4188F #B48B18 #18B43D

square

#1841B4 #B4188F #B48B18 #18B43D

split-complementary

#1841B4 #B43D18 #8FB418

monochromatic

#0A1A48 #112D7E #1841B4 #2758E2 #5D82E9

Accessibility & contrast

On white

8.56

#1841B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#1841B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1841B4

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1841B4	#FFFFFF	#000000	##FFFFFF
##1841B4	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B8

Deuteranopia (green-blind)

#0045B2

Tritanopia (blue-blind)

#006074

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #1841b4;
/* rgb */ color: rgb(24, 65, 180);
/* oklch */ color: oklch(42.9% 0.188 264.4);

Tailwind

colors: {
  custom: {
    50: '#7475cb',
    500: '#1841b4',
    950: '#000000',
  },
}

SCSS

$custom: #1841b4;
$custom-light: #7475cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1841b4",
  "rgb": {
    "r": 24,
    "g": 65,
    "b": 180
  },
  "hsl": {
    "h": 224.231,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.42916,
    "c": 0.18753,
    "h": 264.4
  },
  "luminance": 0.0727
}

Semantic roles & 50–950 ramp

primary

#1841B4

secondary

#CDAF5B

accent

#C135F3

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1841B4

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

Preview Lab → · Contrast checker → · Palette generator →