#1C3A8D#1C3A8D

#1C3A8D is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.1% C 0.143 H 265.1°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#1C3A8D
RGB	rgb(28, 58, 141)
HSL	hsl(224, 67%, 33%)
HSV	hsv(224, 80%, 55%)
CMYK	cmyk(80.1%, 58.9%, 0%, 44.7%)
CIE-LAB	lab(27.28, 20.98, -49.20)
CIE-LCH	lch(27.28, 53.48, 293.09°)
OKLab	oklab(38.08% -0.0122 -0.1421)
OKLCH	oklch(38.08% 0.143 265.1)
XYZ	xyz(6.7980, 5.1953, 25.8387)
Luminance	0.0520 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3A8D #8D6F1C

analogous

#1C728D #1C3A8D #361C8D

triadic

#1C3A8D #8D1C3A #3A8D1C

tetradic

#1C3A8D #8D1C72 #8D6F1C #1C8D36

square

#1C3A8D #8D1C72 #8D6F1C #1C8D36

split-complementary

#1C3A8D #8D361C #728D1C

monochromatic

#081027 #12255A #1C3A8D #264FC0 #496FDB

Accessibility & contrast

On white

10.30

#1C3A8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1C3A8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3A8D

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3A8D	#FFFFFF	#000000	##FFFFFF
##1C3A8D	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004690

Deuteranopia (green-blind)

#003B8B

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1c3a8d;
/* rgb */ color: rgb(28, 58, 141);
/* oklch */ color: oklch(38.1% 0.143 265.1);

Tailwind

colors: {
  custom: {
    50: '#6c6faf',
    500: '#1c3a8d',
    950: '#000000',
  },
}

SCSS

$custom: #1c3a8d;
$custom-light: #6c6faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3a8d",
  "rgb": {
    "r": 28,
    "g": 58,
    "b": 141
  },
  "hsl": {
    "h": 224.071,
    "s": 66.864,
    "l": 33.137
  },
  "oklch": {
    "l": 0.38084,
    "c": 0.14259,
    "h": 265.1
  },
  "luminance": 0.05196
}

Semantic roles & 50–950 ramp

primary

#1C3A8D

secondary

#BD9E48

accent

#BC3EEA

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1C3A8D

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

Preview Lab → · Contrast checker → · Palette generator →