#1851B4#1851B4

#1851B4 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.1% C 0.168 H 260.8°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#1851B4
RGB	rgb(24, 81, 180)
HSL	hsl(218, 76%, 40%)
HSV	hsv(218, 87%, 71%)
CMYK	cmyk(86.7%, 55%, 0%, 29.4%)
CIE-LAB	lab(36.69, 20.57, -57.43)
CIE-LCH	lch(36.69, 61.00, 289.70°)
OKLab	oklab(46.13% -0.0269 -0.1659)
OKLCH	oklch(46.13% 0.168 260.8)
XYZ	xyz(11.5543, 9.3729, 44.3713)
Luminance	0.0937 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1851B4 #B47B18

analogous

#189FB4 #1851B4 #2D18B4

triadic

#1851B4 #B41851 #51B418

tetradic

#1851B4 #B4189F #B47B18 #18B42D

square

#1851B4 #B4189F #B47B18 #18B42D

split-complementary

#1851B4 #B42D18 #9FB418

monochromatic

#0A2048 #11397E #1851B4 #276BE2 #5D90E9

Accessibility & contrast

On white

7.30

#1851B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.87

#1851B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1851B4

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1851B4	#FFFFFF	#000000	##FFFFFF
##1851B4	1.00	7.30	2.87	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.87	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB7

Deuteranopia (green-blind)

#0050B2

Tritanopia (blue-blind)

#006A7A

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #1851b4;
/* rgb */ color: rgb(24, 81, 180);
/* oklch */ color: oklch(46.1% 0.168 260.8);

Tailwind

colors: {
  custom: {
    50: '#7381cb',
    500: '#1851b4',
    950: '#000000',
  },
}

SCSS

$custom: #1851b4;
$custom-light: #7381cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1851b4",
  "rgb": {
    "r": 24,
    "g": 81,
    "b": 180
  },
  "hsl": {
    "h": 218.077,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.46126,
    "c": 0.16803,
    "h": 260.8
  },
  "luminance": 0.09374
}

Semantic roles & 50–950 ramp

primary

#1851B4

secondary

#CDA35B

accent

#AE35F3

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1851B4

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

Preview Lab → · Contrast checker → · Palette generator →