#1C3FA8#1C3FA8

#1C3FA8 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.5% C 0.173 H 265.2°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#1C3FA8
RGB	rgb(28, 63, 168)
HSL	hsl(225, 71%, 38%)
HSV	hsv(225, 83%, 66%)
CMYK	cmyk(83.3%, 62.5%, 0%, 34.1%)
CIE-LAB	lab(30.94, 28.23, -59.66)
CIE-LCH	lch(30.94, 66.00, 295.33°)
OKLab	oklab(41.53% -0.0146 -0.1727)
OKLCH	oklch(41.53% 0.173 265.2)
XYZ	xyz(9.3218, 6.6279, 37.8262)
Luminance	0.0663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3FA8 #A8851C

analogous

#1C85A8 #1C3FA8 #3F1CA8

triadic

#1C3FA8 #A81C3F #3FA81C

tetradic

#1C3FA8 #A81C85 #A8851C #1CA83F

square

#1C3FA8 #A81C85 #A8851C #1CA83F

split-complementary

#1C3FA8 #A83F1C #85A81C

monochromatic

#0B183F #132B74 #1C3FA8 #2653DB #5B7DE4

Accessibility & contrast

On white

9.03

#1C3FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1C3FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3FA8

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3FA8	#FFFFFF	#000000	##FFFFFF
##1C3FA8	1.00	9.03	2.33	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AB

Deuteranopia (green-blind)

#0042A6

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1c3fa8;
/* rgb */ color: rgb(28, 63, 168);
/* oklch */ color: oklch(41.5% 0.173 265.2);

Tailwind

colors: {
  custom: {
    50: '#7273c3',
    500: '#1c3fa8',
    950: '#000000',
  },
}

SCSS

$custom: #1c3fa8;
$custom-light: #7273c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3fa8",
  "rgb": {
    "r": 28,
    "g": 63,
    "b": 168
  },
  "hsl": {
    "h": 225,
    "s": 71.429,
    "l": 38.431
  },
  "oklch": {
    "l": 0.41533,
    "c": 0.17329,
    "h": 265.2
  },
  "luminance": 0.06629
}

Semantic roles & 50–950 ramp

primary

#1C3FA8

secondary

#C7AC58

accent

#C13AEE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090813

muted

#7B7B82

Preview Lab

Preview with #1C3FA8

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

Preview Lab → · Contrast checker → · Palette generator →