#1839B4#1839B4

#1839B4 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.5% C 0.197 H 265.7°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#1839B4
RGB	rgb(24, 57, 180)
HSL	hsl(227, 76%, 40%)
HSV	hsv(227, 87%, 71%)
CMYK	cmyk(86.7%, 68.3%, 0%, 29.4%)
CIE-LAB	lab(30.43, 36.48, -67.67)
CIE-LCH	lch(30.43, 76.87, 298.33°)
OKLab	oklab(41.46% -0.0149 -0.1962)
OKLCH	oklch(41.46% 0.197 265.7)
XYZ	xyz(10.0751, 6.4145, 43.8783)
Luminance	0.0642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1839B4 #B49318

analogous

#1887B4 #1839B4 #4518B4

triadic

#1839B4 #B41839 #39B418

tetradic

#1839B4 #B41887 #B49318 #18B445

square

#1839B4 #B41887 #B49318 #18B445

split-complementary

#1839B4 #B44518 #87B418

monochromatic

#0A1748 #11287E #1839B4 #274FE2 #5D7BE9

Accessibility & contrast

On white

9.20

#1839B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1839B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1839B4

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1839B4	#FFFFFF	#000000	##FFFFFF
##1839B4	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB8

Deuteranopia (green-blind)

#0040B2

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1839b4;
/* rgb */ color: rgb(24, 57, 180);
/* oklch */ color: oklch(41.5% 0.197 265.7);

Tailwind

colors: {
  custom: {
    50: '#756fcc',
    500: '#1839b4',
    950: '#000000',
  },
}

SCSS

$custom: #1839b4;
$custom-light: #756fcc;
$custom-dark: #000000;

JSON

{
  "hex": "#1839b4",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 180
  },
  "hsl": {
    "h": 227.308,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.41463,
    "c": 0.19674,
    "h": 265.7
  },
  "luminance": 0.06416
}

Semantic roles & 50–950 ramp

primary

#1839B4

secondary

#CDB55B

accent

#CB35F3

background

#F7F6FC

surface

#EEECF9

border

#C9C7D2

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #1839B4

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

Preview Lab → · Contrast checker → · Palette generator →