#1C4AAB#1C4AAB

#1C4AAB is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.0% C 0.164 H 262.6°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#1C4AAB
RGB	rgb(28, 74, 171)
HSL	hsl(221, 72%, 39%)
HSV	hsv(221, 84%, 67%)
CMYK	cmyk(83.6%, 56.7%, 0%, 32.9%)
CIE-LAB	lab(34.16, 22.00, -56.21)
CIE-LCH	lch(34.16, 60.36, 291.38°)
OKLab	oklab(44.02% -0.0211 -0.1624)
OKLCH	oklch(44.02% 0.164 262.6)
XYZ	xyz(10.2757, 8.0834, 39.5389)
Luminance	0.0809 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4AAB #AB7D1C

analogous

#1C92AB #1C4AAB #361CAB

triadic

#1C4AAB #AB1C4A #4AAB1C

tetradic

#1C4AAB #AB1C92 #AB7D1C #1CAB36

square

#1C4AAB #AB1C92 #AB7D1C #1CAB36

split-complementary

#1C4AAB #AB361C #92AB1C

monochromatic

#0B1C42 #133376 #1C4AAB #2862DC #5D89E4

Accessibility & contrast

On white

8.02

#1C4AAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#1C4AAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4AAB

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4AAB	#FFFFFF	#000000	##FFFFFF
##1C4AAB	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057AE

Deuteranopia (green-blind)

#004AA9

Tritanopia (blue-blind)

#006273

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1c4aab;
/* rgb */ color: rgb(28, 74, 171);
/* oklch */ color: oklch(44.0% 0.164 262.6);

Tailwind

colors: {
  custom: {
    50: '#727bc5',
    500: '#1c4aab',
    950: '#000000',
  },
}

SCSS

$custom: #1c4aab;
$custom-light: #727bc5;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4aab",
  "rgb": {
    "r": 28,
    "g": 74,
    "b": 171
  },
  "hsl": {
    "h": 220.699,
    "s": 71.859,
    "l": 39.02
  },
  "oklch": {
    "l": 0.44017,
    "c": 0.16374,
    "h": 262.6
  },
  "luminance": 0.08085
}

Semantic roles & 50–950 ramp

primary

#1C4AAB

secondary

#C9A55A

accent

#B439EF

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090913

muted

#7B7B82

Preview Lab

Preview with #1C4AAB

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

Preview Lab → · Contrast checker → · Palette generator →