#1C3E8A#1C3E8A

#1C3E8A is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.7% C 0.133 H 263.3°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#1C3E8A
RGB	rgb(28, 62, 138)
HSL	hsl(221, 66%, 33%)
HSV	hsv(221, 80%, 54%)
CMYK	cmyk(79.7%, 55.1%, 0%, 45.9%)
CIE-LAB	lab(28.18, 16.99, -45.88)
CIE-LCH	lch(28.18, 48.92, 290.32°)
OKLab	oklab(38.69% -0.0154 -0.1322)
OKLCH	oklch(38.69% 0.133 263.3)
XYZ	xyz(6.7873, 5.5263, 24.7488)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3E8A #8A681C

analogous

#1C758A #1C3E8A #311C8A

triadic

#1C3E8A #8A1C3E #3E8A1C

tetradic

#1C3E8A #8A1C75 #8A681C #1C8A31

square

#1C3E8A #8A1C75 #8A681C #1C8A31

split-complementary

#1C3E8A #8A311C #758A1C

monochromatic

#071024 #122757 #1C3E8A #2655BD #4774DA

Accessibility & contrast

On white

9.97

#1C3E8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1C3E8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3E8A

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3E8A	#FFFFFF	#000000	##FFFFFF
##1C3E8A	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#01488D

Deuteranopia (green-blind)

#003E88

Tritanopia (blue-blind)

#00515D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1c3e8a;
/* rgb */ color: rgb(28, 62, 138);
/* oklch */ color: oklch(38.7% 0.133 263.3);

Tailwind

colors: {
  custom: {
    50: '#6a72ad',
    500: '#1c3e8a',
    950: '#000000',
  },
}

SCSS

$custom: #1c3e8a;
$custom-light: #6a72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3e8a",
  "rgb": {
    "r": 28,
    "g": 62,
    "b": 138
  },
  "hsl": {
    "h": 221.455,
    "s": 66.265,
    "l": 32.549
  },
  "oklch": {
    "l": 0.38688,
    "c": 0.13313,
    "h": 263.3
  },
  "luminance": 0.05527
}

Semantic roles & 50–950 ramp

primary

#1C3E8A

secondary

#BB9746

accent

#B43FE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1C3E8A

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

Preview Lab → · Contrast checker → · Palette generator →