#1C3D8A#1C3D8A

#1C3D8A is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.5% C 0.134 H 263.7°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#1C3D8A
RGB	rgb(28, 61, 138)
HSL	hsl(222, 66%, 33%)
HSV	hsv(222, 80%, 54%)
CMYK	cmyk(79.7%, 55.8%, 0%, 45.9%)
CIE-LAB	lab(27.90, 17.68, -46.35)
CIE-LCH	lch(27.90, 49.60, 290.88°)
OKLab	oklab(38.47% -0.0147 -0.1336)
OKLCH	oklch(38.47% 0.134 263.7)
XYZ	xyz(6.7334, 5.4186, 24.7308)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3D8A #8A691C

analogous

#1C748A #1C3D8A #321C8A

triadic

#1C3D8A #8A1C3D #3D8A1C

tetradic

#1C3D8A #8A1C74 #8A691C #1C8A32

square

#1C3D8A #8A1C74 #8A691C #1C8A32

split-complementary

#1C3D8A #8A321C #748A1C

monochromatic

#071024 #122757 #1C3D8A #2653BD #4773DA

Accessibility & contrast

On white

10.08

#1C3D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#1C3D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3D8A

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3D8A	#FFFFFF	#000000	##FFFFFF
##1C3D8A	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478D

Deuteranopia (green-blind)

#003D88

Tritanopia (blue-blind)

#00505D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1c3d8a;
/* rgb */ color: rgb(28, 61, 138);
/* oklch */ color: oklch(38.5% 0.134 263.7);

Tailwind

colors: {
  custom: {
    50: '#6b71ad',
    500: '#1c3d8a',
    950: '#000000',
  },
}

SCSS

$custom: #1c3d8a;
$custom-light: #6b71ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3d8a",
  "rgb": {
    "r": 28,
    "g": 61,
    "b": 138
  },
  "hsl": {
    "h": 222,
    "s": 66.265,
    "l": 32.549
  },
  "oklch": {
    "l": 0.38469,
    "c": 0.13443,
    "h": 263.7
  },
  "luminance": 0.05419
}

Semantic roles & 50–950 ramp

primary

#1C3D8A

secondary

#BB9846

accent

#B63FE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1C3D8A

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

Preview Lab → · Contrast checker → · Palette generator →