#1C55AB#1C55AB

#1C55AB is a mid, vivid blue. Relative luminance 0.097; OKLCH L 46.4% C 0.150 H 259.0°. Best body text is #FFFFFF at 7.15:1 contrast (WCAG AA passes).

Color values

HEX	#1C55AB
RGB	rgb(28, 85, 171)
HSL	hsl(216, 72%, 39%)
HSV	hsv(216, 84%, 67%)
CMYK	cmyk(83.6%, 50.3%, 0%, 32.9%)
CIE-LAB	lab(37.27, 14.62, -51.17)
CIE-LCH	lch(37.27, 53.21, 285.94°)
OKLab	oklab(46.38% -0.0286 -0.1473)
OKLCH	oklch(46.38% 0.15 259)
XYZ	xyz(11.0754, 9.6828, 39.8054)
Luminance	0.0968 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C55AB #AB721C

analogous

#1C9DAB #1C55AB #2B1CAB

triadic

#1C55AB #AB1C55 #55AB1C

tetradic

#1C55AB #AB1C9D #AB721C #1CAB2B

square

#1C55AB #AB1C9D #AB721C #1CAB2B

split-complementary

#1C55AB #AB2B1C #9DAB1C

monochromatic

#0B2142 #133B76 #1C55AB #2870DC #5D93E4

Accessibility & contrast

On white

7.15

#1C55AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#1C55AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C55AB

7.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C55AB	#FFFFFF	#000000	##FFFFFF
##1C55AB	1.00	7.15	2.94	7.15
#FFFFFF	7.15	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F5EAE

Deuteranopia (green-blind)

#0052A9

Tritanopia (blue-blind)

#006A78

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1c55ab;
/* rgb */ color: rgb(28, 85, 171);
/* oklch */ color: oklch(46.4% 0.150 259.0);

Tailwind

colors: {
  custom: {
    50: '#7284c5',
    500: '#1c55ab',
    950: '#000000',
  },
}

SCSS

$custom: #1c55ab;
$custom-light: #7284c5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c55ab",
  "rgb": {
    "r": 28,
    "g": 85,
    "b": 171
  },
  "hsl": {
    "h": 216.084,
    "s": 71.859,
    "l": 39.02
  },
  "oklch": {
    "l": 0.46384,
    "c": 0.15009,
    "h": 259
  },
  "luminance": 0.09684
}

Semantic roles & 50–950 ramp

primary

#1C55AB

secondary

#C99D5A

accent

#A639EF

background

#F7F8FC

surface

#EDEFF8

border

#C8CAD1

text

#090A13

muted

#7B7C82

Preview Lab

Preview with #1C55AB

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

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