#1C40A6#1C40A6

#1C40A6 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.5% C 0.169 H 264.8°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#1C40A6
RGB	rgb(28, 64, 166)
HSL	hsl(224, 71%, 38%)
HSV	hsv(224, 83%, 65%)
CMYK	cmyk(83.1%, 61.4%, 0%, 34.9%)
CIE-LAB	lab(31.03, 26.78, -58.31)
CIE-LCH	lch(31.03, 64.17, 294.67°)
OKLab	oklab(41.55% -0.0152 -0.1687)
OKLCH	oklch(41.55% 0.169 264.8)
XYZ	xyz(9.1928, 6.6657, 36.8711)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C40A6 #A6821C

analogous

#1C85A6 #1C40A6 #3D1CA6

triadic

#1C40A6 #A61C40 #40A61C

tetradic

#1C40A6 #A61C85 #A6821C #1CA63D

square

#1C40A6 #A61C85 #A6821C #1CA63D

split-complementary

#1C40A6 #A63D1C #85A61C

monochromatic

#0A183D #132C72 #1C40A6 #2554DA #597DE3

Accessibility & contrast

On white

9.00

#1C40A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1C40A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C40A6

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C40A6	#FFFFFF	#000000	##FFFFFF
##1C40A6	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A9

Deuteranopia (green-blind)

#0043A4

Tritanopia (blue-blind)

#005A6C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1c40a6;
/* rgb */ color: rgb(28, 64, 166);
/* oklch */ color: oklch(41.5% 0.169 264.8);

Tailwind

colors: {
  custom: {
    50: '#7274c1',
    500: '#1c40a6',
    950: '#000000',
  },
}

SCSS

$custom: #1c40a6;
$custom-light: #7274c1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c40a6",
  "rgb": {
    "r": 28,
    "g": 64,
    "b": 166
  },
  "hsl": {
    "h": 224.348,
    "s": 71.134,
    "l": 38.039
  },
  "oklch": {
    "l": 0.41546,
    "c": 0.1694,
    "h": 264.8
  },
  "luminance": 0.06667
}

Semantic roles & 50–950 ramp

primary

#1C40A6

secondary

#C7AA57

accent

#BF3AEE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1C40A6

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

Preview Lab → · Contrast checker → · Palette generator →