#1C51B4#1C51B4

#1C51B4 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.2% C 0.167 H 261.5°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#1C51B4
RGB	rgb(28, 81, 180)
HSL	hsl(219, 73%, 41%)
HSV	hsv(219, 84%, 71%)
CMYK	cmyk(84.4%, 55%, 0%, 29.4%)
CIE-LAB	lab(36.79, 20.87, -57.26)
CIE-LCH	lch(36.79, 60.95, 290.02°)
OKLab	oklab(46.23% -0.0248 -0.1653)
OKLCH	oklch(46.23% 0.167 261.5)
XYZ	xyz(11.6566, 9.4256, 44.3761)
Luminance	0.0943 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C51B4 #B47F1C

analogous

#1C9DB4 #1C51B4 #331CB4

triadic

#1C51B4 #B41C51 #51B41C

tetradic

#1C51B4 #B41C9D #B47F1C #1CB433

square

#1C51B4 #B41C9D #B47F1C #1CB433

split-complementary

#1C51B4 #B4331C #9DB41C

monochromatic

#0C214A #14397F #1C51B4 #2F6CDF #6491E7

Accessibility & contrast

On white

7.28

#1C51B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#1C51B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C51B4

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C51B4	#FFFFFF	#000000	##FFFFFF
##1C51B4	1.00	7.28	2.89	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB7

Deuteranopia (green-blind)

#0050B2

Tritanopia (blue-blind)

#006A7A

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #1c51b4;
/* rgb */ color: rgb(28, 81, 180);
/* oklch */ color: oklch(46.2% 0.167 261.5);

Tailwind

colors: {
  custom: {
    50: '#7481cb',
    500: '#1c51b4',
    950: '#000000',
  },
}

SCSS

$custom: #1c51b4;
$custom-light: #7481cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1c51b4",
  "rgb": {
    "r": 28,
    "g": 81,
    "b": 180
  },
  "hsl": {
    "h": 219.079,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.46229,
    "c": 0.1672,
    "h": 261.5
  },
  "luminance": 0.09427
}

Semantic roles & 50–950 ramp

primary

#1C51B4

secondary

#CCA660

accent

#B038F0

background

#F7F7FC

surface

#EEEEF9

border

#C9C9D2

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #1C51B4

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

Preview Lab → · Contrast checker → · Palette generator →