#1C40A8#1C40A8

#1C40A8 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.7% C 0.172 H 264.9°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#1C40A8
RGB	rgb(28, 64, 168)
HSL	hsl(225, 71%, 38%)
HSV	hsv(225, 83%, 66%)
CMYK	cmyk(83.3%, 61.9%, 0%, 34.1%)
CIE-LAB	lab(31.21, 27.56, -59.23)
CIE-LCH	lch(31.21, 65.33, 294.96°)
OKLab	oklab(41.73% -0.0152 -0.1714)
OKLCH	oklch(41.73% 0.172 264.9)
XYZ	xyz(9.3777, 6.7397, 37.8448)
Luminance	0.0674 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C40A8 #A8841C

analogous

#1C86A8 #1C40A8 #3E1CA8

triadic

#1C40A8 #A81C40 #40A81C

tetradic

#1C40A8 #A81C86 #A8841C #1CA83E

square

#1C40A8 #A81C86 #A8841C #1CA83E

split-complementary

#1C40A8 #A83E1C #86A81C

monochromatic

#0B183F #132C74 #1C40A8 #2655DB #5B7EE4

Accessibility & contrast

On white

8.94

#1C40A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1C40A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C40A8

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C40A8	#FFFFFF	#000000	##FFFFFF
##1C40A8	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AB

Deuteranopia (green-blind)

#0043A6

Tritanopia (blue-blind)

#005B6E

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1c40a8;
/* rgb */ color: rgb(28, 64, 168);
/* oklch */ color: oklch(41.7% 0.172 264.9);

Tailwind

colors: {
  custom: {
    50: '#7274c3',
    500: '#1c40a8',
    950: '#000000',
  },
}

SCSS

$custom: #1c40a8;
$custom-light: #7274c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1c40a8",
  "rgb": {
    "r": 28,
    "g": 64,
    "b": 168
  },
  "hsl": {
    "h": 224.571,
    "s": 71.429,
    "l": 38.431
  },
  "oklch": {
    "l": 0.41728,
    "c": 0.17207,
    "h": 264.9
  },
  "luminance": 0.06741
}

Semantic roles & 50–950 ramp

primary

#1C40A8

secondary

#C7AB58

accent

#C03AEE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090813

muted

#7B7B82

Preview Lab

Preview with #1C40A8

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

Preview Lab → · Contrast checker → · Palette generator →