#1C3AA1#1C3AA1

#1C3AA1 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.9% C 0.170 H 266.0°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#1C3AA1
RGB	rgb(28, 58, 161)
HSL	hsl(226, 70%, 37%)
HSV	hsv(226, 83%, 63%)
CMYK	cmyk(82.6%, 64%, 0%, 36.9%)
CIE-LAB	lab(29.02, 28.87, -58.59)
CIE-LCH	lch(29.02, 65.32, 296.23°)
OKLab	oklab(39.91% -0.0119 -0.1696)
OKLCH	oklch(39.91% 0.17 266)
XYZ	xyz(8.4227, 5.8452, 34.3956)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3AA1 #A1831C

analogous

#1C7DA1 #1C3AA1 #411CA1

triadic

#1C3AA1 #A11C3A #3AA11C

tetradic

#1C3AA1 #A11C7D #A1831C #1CA141

square

#1C3AA1 #A11C7D #A1831C #1CA141

split-complementary

#1C3AA1 #A1411C #7DA11C

monochromatic

#0A1439 #13276D #1C3AA1 #254DD5 #5675E2

Accessibility & contrast

On white

9.68

#1C3AA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#1C3AA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3AA1

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3AA1	#FFFFFF	#000000	##FFFFFF
##1C3AA1	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA4

Deuteranopia (green-blind)

#003E9F

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1c3aa1;
/* rgb */ color: rgb(28, 58, 161);
/* oklch */ color: oklch(39.9% 0.170 266.0);

Tailwind

colors: {
  custom: {
    50: '#716fbe',
    500: '#1c3aa1',
    950: '#000000',
  },
}

SCSS

$custom: #1c3aa1;
$custom-light: #716fbe;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3aa1",
  "rgb": {
    "r": 28,
    "g": 58,
    "b": 161
  },
  "hsl": {
    "h": 226.466,
    "s": 70.37,
    "l": 37.059
  },
  "oklch": {
    "l": 0.39914,
    "c": 0.17004,
    "h": 266
  },
  "luminance": 0.05846
}

Semantic roles & 50–950 ramp

primary

#1C3AA1

secondary

#C5AB54

accent

#C53BED

background

#F7F6FB

surface

#EDECF7

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1C3AA1

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

Preview Lab → · Contrast checker → · Palette generator →