#1C4FA1#1C4FA1

#1C4FA1 is a dark, vivid blue. Relative luminance 0.084; OKLCH L 44.3% C 0.144 H 259.7°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#1C4FA1
RGB	rgb(28, 79, 161)
HSL	hsl(217, 70%, 37%)
HSV	hsv(217, 83%, 63%)
CMYK	cmyk(82.6%, 50.9%, 0%, 36.9%)
CIE-LAB	lab(34.82, 14.63, -49.14)
CIE-LCH	lch(34.82, 51.28, 286.58°)
OKLab	oklab(44.29% -0.0256 -0.1415)
OKLCH	oklch(44.29% 0.144 259.7)
XYZ	xyz(9.7055, 8.4109, 34.8232)
Luminance	0.0841 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C4FA1 #A16E1C

analogous

#1C92A1 #1C4FA1 #2B1CA1

triadic

#1C4FA1 #A11C4F #4FA11C

tetradic

#1C4FA1 #A11C92 #A16E1C #1CA12B

square

#1C4FA1 #A11C92 #A16E1C #1CA12B

split-complementary

#1C4FA1 #A12B1C #92A11C

monochromatic

#0A1C39 #13356D #1C4FA1 #2569D5 #568BE2

Accessibility & contrast

On white

7.83

#1C4FA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#1C4FA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4FA1

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C4FA1	#FFFFFF	#000000	##FFFFFF
##1C4FA1	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B58A4

Deuteranopia (green-blind)

#004C9F

Tritanopia (blue-blind)

#006370

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1c4fa1;
/* rgb */ color: rgb(28, 79, 161);
/* oklch */ color: oklch(44.3% 0.144 259.7);

Tailwind

colors: {
  custom: {
    50: '#6f7fbd',
    500: '#1c4fa1',
    950: '#000000',
  },
}

SCSS

$custom: #1c4fa1;
$custom-light: #6f7fbd;
$custom-dark: #000000;

JSON

{
  "hex": "#1c4fa1",
  "rgb": {
    "r": 28,
    "g": 79,
    "b": 161
  },
  "hsl": {
    "h": 216.992,
    "s": 70.37,
    "l": 37.059
  },
  "oklch": {
    "l": 0.44288,
    "c": 0.1438,
    "h": 259.7
  },
  "luminance": 0.08412
}

Semantic roles & 50–950 ramp

primary

#1C4FA1

secondary

#C59A54

accent

#A93BED

background

#F7F7FB

surface

#EDEEF7

border

#C8C9D0

text

#090A12

muted

#7B7C81

Preview Lab

Preview with #1C4FA1

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

Preview Lab → · Contrast checker → · Palette generator →