#1C3C9F#1C3C9F

#1C3C9F is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.1% C 0.165 H 265.5°. Best body text is #FFFFFF at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#1C3C9F
RGB	rgb(28, 60, 159)
HSL	hsl(225, 70%, 37%)
HSV	hsv(225, 82%, 62%)
CMYK	cmyk(82.4%, 62.3%, 0%, 37.6%)
CIE-LAB	lab(29.36, 26.74, -56.82)
CIE-LCH	lch(29.36, 62.79, 295.21°)
OKLab	oklab(40.12% -0.013 -0.1644)
OKLCH	oklch(40.12% 0.165 265.5)
XYZ	xyz(8.3505, 5.9808, 33.5085)
Luminance	0.0598 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3C9F #9F7F1C

analogous

#1C7D9F #1C3C9F #3E1C9F

triadic

#1C3C9F #9F1C3C #3C9F1C

tetradic

#1C3C9F #9F1C7D #9F7F1C #1C9F3E

square

#1C3C9F #9F1C7D #9F7F1C #1C9F3E

split-complementary

#1C3C9F #9F3E1C #7D9F1C

monochromatic

#0A1537 #13286B #1C3C9F #2550D3 #5477E1

Accessibility & contrast

On white

9.56

#1C3C9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#1C3C9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3C9F

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3C9F	#FFFFFF	#000000	##FFFFFF
##1C3C9F	1.00	9.56	2.20	9.56
#FFFFFF	9.56	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA2

Deuteranopia (green-blind)

#003F9D

Tritanopia (blue-blind)

#005667

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1c3c9f;
/* rgb */ color: rgb(28, 60, 159);
/* oklch */ color: oklch(40.1% 0.165 265.5);

Tailwind

colors: {
  custom: {
    50: '#7071bc',
    500: '#1c3c9f',
    950: '#000000',
  },
}

SCSS

$custom: #1c3c9f;
$custom-light: #7071bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3c9f",
  "rgb": {
    "r": 28,
    "g": 60,
    "b": 159
  },
  "hsl": {
    "h": 225.344,
    "s": 70.053,
    "l": 36.667
  },
  "oklch": {
    "l": 0.40115,
    "c": 0.1649,
    "h": 265.5
  },
  "luminance": 0.05982
}

Semantic roles & 50–950 ramp

primary

#1C3C9F

secondary

#C4A853

accent

#C13BED

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C3C9F

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

Preview Lab → · Contrast checker → · Palette generator →