#1C3C8A#1C3C8A

#1C3C8A is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.3% C 0.136 H 264.1°. Best body text is #FFFFFF at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#1C3C8A
RGB	rgb(28, 60, 138)
HSL	hsl(223, 66%, 33%)
HSV	hsv(223, 80%, 54%)
CMYK	cmyk(79.7%, 56.5%, 0%, 45.9%)
CIE-LAB	lab(27.61, 18.38, -46.81)
CIE-LCH	lch(27.61, 50.29, 291.44°)
OKLab	oklab(38.25% -0.0139 -0.135)
OKLCH	oklch(38.25% 0.136 264.1)
XYZ	xyz(6.6806, 5.3128, 24.7132)
Luminance	0.0531 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3C8A #8A6A1C

analogous

#1C738A #1C3C8A #331C8A

triadic

#1C3C8A #8A1C3C #3C8A1C

tetradic

#1C3C8A #8A1C73 #8A6A1C #1C8A33

square

#1C3C8A #8A1C73 #8A6A1C #1C8A33

split-complementary

#1C3C8A #8A331C #738A1C

monochromatic

#071024 #122657 #1C3C8A #2652BD #4771DA

Accessibility & contrast

On white

10.18

#1C3C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1C3C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3C8A

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3C8A	#FFFFFF	#000000	##FFFFFF
##1C3C8A	1.00	10.18	2.06	10.18
#FFFFFF	10.18	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00468D

Deuteranopia (green-blind)

#003C88

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1c3c8a;
/* rgb */ color: rgb(28, 60, 138);
/* oklch */ color: oklch(38.3% 0.136 264.1);

Tailwind

colors: {
  custom: {
    50: '#6b71ad',
    500: '#1c3c8a',
    950: '#000000',
  },
}

SCSS

$custom: #1c3c8a;
$custom-light: #6b71ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3c8a",
  "rgb": {
    "r": 28,
    "g": 60,
    "b": 138
  },
  "hsl": {
    "h": 222.545,
    "s": 66.265,
    "l": 32.549
  },
  "oklch": {
    "l": 0.38251,
    "c": 0.13573,
    "h": 264.1
  },
  "luminance": 0.05314
}

Semantic roles & 50–950 ramp

primary

#1C3C8A

secondary

#BB9946

accent

#B83FE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080710

muted

#7A7A7F

Preview Lab

Preview with #1C3C8A

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

Preview Lab → · Contrast checker → · Palette generator →