#1C4AA4#1C4AA4

#1C4AA4 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.4% C 0.154 H 261.9°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX	#1C4AA4
RGB	rgb(28, 74, 164)
HSL	hsl(220, 71%, 38%)
HSV	hsv(220, 83%, 64%)
CMYK	cmyk(82.9%, 54.9%, 0%, 35.7%)
CIE-LAB	lab(33.61, 19.22, -52.91)
CIE-LCH	lch(33.61, 56.29, 289.96°)
OKLab	oklab(43.44% -0.0217 -0.1527)
OKLCH	oklch(43.44% 0.154 261.9)
XYZ	xyz(9.6261, 7.8236, 36.1175)
Luminance	0.0783 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4AA4 #A4761C

analogous

#1C8EA4 #1C4AA4 #321CA4

triadic

#1C4AA4 #A41C4A #4AA41C

tetradic

#1C4AA4 #A41C8E #A4761C #1CA432

square

#1C4AA4 #A41C8E #A4761C #1CA432

split-complementary

#1C4AA4 #A4321C #8EA41C

monochromatic

#0A1B3B #133270 #1C4AA4 #2562D8 #5887E2

Accessibility & contrast

On white

8.19

#1C4AA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1C4AA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4AA4

8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4AA4	#FFFFFF	#000000	##FFFFFF
##1C4AA4	1.00	8.19	2.57	8.19
#FFFFFF	8.19	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056A7

Deuteranopia (green-blind)

#0049A2

Tritanopia (blue-blind)

#00606F

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1c4aa4;
/* rgb */ color: rgb(28, 74, 164);
/* oklch */ color: oklch(43.4% 0.154 261.9);

Tailwind

colors: {
  custom: {
    50: '#707bc0',
    500: '#1c4aa4',
    950: '#000000',
  },
}

SCSS

$custom: #1c4aa4;
$custom-light: #707bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4aa4",
  "rgb": {
    "r": 28,
    "g": 74,
    "b": 164
  },
  "hsl": {
    "h": 219.706,
    "s": 70.833,
    "l": 37.647
  },
  "oklch": {
    "l": 0.43435,
    "c": 0.1542,
    "h": 261.9
  },
  "luminance": 0.07825
}

Semantic roles & 50–950 ramp

primary

#1C4AA4

secondary

#C6A056

accent

#B13AEE

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090912

muted

#7B7B81

Preview Lab

Preview with #1C4AA4

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

Preview Lab → · Contrast checker → · Palette generator →