#1C3FA7#1C3FA7

#1C3FA7 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.4% C 0.172 H 265.1°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#1C3FA7
RGB	rgb(28, 63, 167)
HSL	hsl(225, 71%, 38%)
HSV	hsv(225, 83%, 65%)
CMYK	cmyk(83.2%, 62.3%, 0%, 34.5%)
CIE-LAB	lab(30.86, 27.85, -59.20)
CIE-LCH	lch(30.86, 65.42, 295.19°)
OKLab	oklab(41.44% -0.0146 -0.1713)
OKLCH	oklch(41.44% 0.172 265.1)
XYZ	xyz(9.2290, 6.5908, 37.3375)
Luminance	0.0659 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C3FA7 #A7841C

analogous

#1C84A7 #1C3FA7 #3E1CA7

triadic

#1C3FA7 #A71C3F #3FA71C

tetradic

#1C3FA7 #A71C84 #A7841C #1CA73E

square

#1C3FA7 #A71C84 #A7841C #1CA73E

split-complementary

#1C3FA7 #A73E1C #84A71C

monochromatic

#0A173E #132B73 #1C3FA7 #2653DB #5A7DE3

Accessibility & contrast

On white

9.06

#1C3FA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#1C3FA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3FA7

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C3FA7	#FFFFFF	#000000	##FFFFFF
##1C3FA7	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAA

Deuteranopia (green-blind)

#0042A5

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1c3fa7;
/* rgb */ color: rgb(28, 63, 167);
/* oklch */ color: oklch(41.4% 0.172 265.1);

Tailwind

colors: {
  custom: {
    50: '#7273c2',
    500: '#1c3fa7',
    950: '#000000',
  },
}

SCSS

$custom: #1c3fa7;
$custom-light: #7273c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1c3fa7",
  "rgb": {
    "r": 28,
    "g": 63,
    "b": 167
  },
  "hsl": {
    "h": 224.892,
    "s": 71.282,
    "l": 38.235
  },
  "oklch": {
    "l": 0.41441,
    "c": 0.17196,
    "h": 265.1
  },
  "luminance": 0.06592
}

Semantic roles & 50–950 ramp

primary

#1C3FA7

secondary

#C7AB58

accent

#C13AEE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1C3FA7

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

Preview Lab → · Contrast checker → · Palette generator →