#1C3863#1C3863

#1C3863 is a dark, moderate blue. Relative luminance 0.040; OKLCH L 34.3% C 0.083 H 258.8°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX	#1C3863
RGB	rgb(28, 56, 99)
HSL	hsl(216, 56%, 25%)
HSV	hsv(216, 72%, 39%)
CMYK	cmyk(71.7%, 43.4%, 0%, 61.2%)
CIE-LAB	lab(23.59, 5.34, -28.55)
CIE-LCH	lch(23.59, 29.05, 280.58°)
OKLab	oklab(34.28% -0.0162 -0.0814)
OKLCH	oklch(34.28% 0.083 258.8)
XYZ	xyz(4.1444, 3.9757, 12.3509)
Luminance	0.0398 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3863 #63471C

analogous

#1C5C63 #1C3863 #231C63

triadic

#1C3863 #631C38 #38631C

tetradic

#1C3863 #631C5C #63471C #1C6323

square

#1C3863 #631C5C #63471C #1C6323

split-complementary

#1C3863 #63231C #5C631C

monochromatic

#070D18 #0F1D33 #1C3863 #295393 #376EC2

Accessibility & contrast

On white

11.70

#1C3863 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1C3863 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3863

11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3863	#FFFFFF	#000000	##FFFFFF
##1C3863	1.00	11.70	1.80	11.70
#FFFFFF	11.70	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#243C65

Deuteranopia (green-blind)

#193562

Tritanopia (blue-blind)

#004248

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1c3863;
/* rgb */ color: rgb(28, 56, 99);
/* oklch */ color: oklch(34.3% 0.083 258.8);

Tailwind

colors: {
  custom: {
    50: '#616e90',
    500: '#1c3863',
    950: '#000000',
  },
}

SCSS

$custom: #1c3863;
$custom-light: #616e90;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3863",
  "rgb": {
    "r": 28,
    "g": 56,
    "b": 99
  },
  "hsl": {
    "h": 216.338,
    "s": 55.906,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34283,
    "c": 0.08299,
    "h": 258.8
  },
  "luminance": 0.03976
}

Semantic roles & 50–950 ramp

primary

#1C3863

secondary

#987643

accent

#A449DF

background

#F6F6F8

surface

#EBEBF0

border

#C6C6CB

text

#05070C

muted

#7A7A7D

Preview Lab

Preview with #1C3863

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

Preview Lab → · Contrast checker → · Palette generator →