#1C3DA1#1C3DA1

#1C3DA1 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.166 H 265.3°. Best body text is #FFFFFF at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#1C3DA1
RGB	rgb(28, 61, 161)
HSL	hsl(225, 70%, 37%)
HSV	hsv(225, 83%, 63%)
CMYK	cmyk(82.6%, 62.1%, 0%, 36.9%)
CIE-LAB	lab(29.80, 26.85, -57.31)
CIE-LCH	lch(29.80, 63.29, 295.10°)
OKLab	oklab(40.5% -0.0136 -0.1658)
OKLCH	oklch(40.5% 0.166 265.3)
XYZ	xyz(8.5784, 6.1565, 34.4475)
Luminance	0.0616 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3DA1 #A1801C

analogous

#1C7FA1 #1C3DA1 #3E1CA1

triadic

#1C3DA1 #A11C3D #3DA11C

tetradic

#1C3DA1 #A11C7F #A1801C #1CA13E

square

#1C3DA1 #A11C7F #A1801C #1CA13E

split-complementary

#1C3DA1 #A13E1C #7FA11C

monochromatic

#0A1539 #13296D #1C3DA1 #2551D5 #5678E2

Accessibility & contrast

On white

9.41

#1C3DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1C3DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3DA1

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3DA1	#FFFFFF	#000000	##FFFFFF
##1C3DA1	1.00	9.41	2.23	9.41
#FFFFFF	9.41	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA4

Deuteranopia (green-blind)

#00409F

Tritanopia (blue-blind)

#005769

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1c3da1;
/* rgb */ color: rgb(28, 61, 161);
/* oklch */ color: oklch(40.5% 0.166 265.3);

Tailwind

colors: {
  custom: {
    50: '#7172be',
    500: '#1c3da1',
    950: '#000000',
  },
}

SCSS

$custom: #1c3da1;
$custom-light: #7172be;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3da1",
  "rgb": {
    "r": 28,
    "g": 61,
    "b": 161
  },
  "hsl": {
    "h": 225.113,
    "s": 70.37,
    "l": 37.059
  },
  "oklch": {
    "l": 0.40496,
    "c": 0.16636,
    "h": 265.3
  },
  "luminance": 0.06158
}

Semantic roles & 50–950 ramp

primary

#1C3DA1

secondary

#C5A954

accent

#C13BED

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C3DA1

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

Preview Lab → · Contrast checker → · Palette generator →