#1C3E88#1C3E88

#1C3E88 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.5% C 0.130 H 263.1°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#1C3E88
RGB	rgb(28, 62, 136)
HSL	hsl(221, 66%, 32%)
HSV	hsv(221, 79%, 53%)
CMYK	cmyk(79.4%, 54.4%, 0%, 46.7%)
CIE-LAB	lab(28.03, 16.18, -44.89)
CIE-LCH	lch(28.03, 47.71, 289.82°)
OKLab	oklab(38.52% -0.0156 -0.1293)
OKLCH	oklch(38.52% 0.13 263.1)
XYZ	xyz(6.6439, 5.4689, 23.9932)
Luminance	0.0547 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3E88 #88661C

analogous

#1C7488 #1C3E88 #301C88

triadic

#1C3E88 #881C3E #3E881C

tetradic

#1C3E88 #881C74 #88661C #1C8830

square

#1C3E88 #881C74 #88661C #1C8830

split-complementary

#1C3E88 #88301C #74881C

monochromatic

#071022 #122755 #1C3E88 #2655BB #4674D9

Accessibility & contrast

On white

10.03

#1C3E88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1C3E88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3E88

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3E88	#FFFFFF	#000000	##FFFFFF
##1C3E88	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07478B

Deuteranopia (green-blind)

#003D87

Tritanopia (blue-blind)

#00505C

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1c3e88;
/* rgb */ color: rgb(28, 62, 136);
/* oklch */ color: oklch(38.5% 0.130 263.1);

Tailwind

colors: {
  custom: {
    50: '#6a72ab',
    500: '#1c3e88',
    950: '#000000',
  },
}

SCSS

$custom: #1c3e88;
$custom-light: #6a72ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3e88",
  "rgb": {
    "r": 28,
    "g": 62,
    "b": 136
  },
  "hsl": {
    "h": 221.111,
    "s": 65.854,
    "l": 32.157
  },
  "oklch": {
    "l": 0.38523,
    "c": 0.13026,
    "h": 263.1
  },
  "luminance": 0.0547
}

Semantic roles & 50–950 ramp

primary

#1C3E88

secondary

#BA9645

accent

#B33FE9

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1C3E88

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

Preview Lab → · Contrast checker → · Palette generator →