#1C40A5#1C40A5

#1C40A5 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.5% C 0.168 H 264.8°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#1C40A5
RGB	rgb(28, 64, 165)
HSL	hsl(224, 71%, 38%)
HSV	hsv(224, 83%, 65%)
CMYK	cmyk(83%, 61.2%, 0%, 35.3%)
CIE-LAB	lab(30.95, 26.39, -57.85)
CIE-LCH	lch(30.95, 63.58, 294.52°)
OKLab	oklab(41.46% -0.0152 -0.1674)
OKLCH	oklch(41.46% 0.168 264.8)
XYZ	xyz(9.1014, 6.6292, 36.3899)
Luminance	0.0663 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C40A5 #A5811C

analogous

#1C84A5 #1C40A5 #3D1CA5

triadic

#1C40A5 #A51C40 #40A51C

tetradic

#1C40A5 #A51C84 #A5811C #1CA53D

square

#1C40A5 #A51C84 #A5811C #1CA53D

split-complementary

#1C40A5 #A53D1C #84A51C

monochromatic

#0A173C #132C71 #1C40A5 #2554D9 #597DE3

Accessibility & contrast

On white

9.03

#1C40A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#1C40A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C40A5

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C40A5	#FFFFFF	#000000	##FFFFFF
##1C40A5	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)

#004FA8

Deuteranopia (green-blind)

#0043A3

Tritanopia (blue-blind)

#005A6C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1c40a5;
/* rgb */ color: rgb(28, 64, 165);
/* oklch */ color: oklch(41.5% 0.168 264.8);

Tailwind

colors: {
  custom: {
    50: '#7174c1',
    500: '#1c40a5',
    950: '#000000',
  },
}

SCSS

$custom: #1c40a5;
$custom-light: #7174c1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c40a5",
  "rgb": {
    "r": 28,
    "g": 64,
    "b": 165
  },
  "hsl": {
    "h": 224.234,
    "s": 70.984,
    "l": 37.843
  },
  "oklch": {
    "l": 0.41455,
    "c": 0.16805,
    "h": 264.8
  },
  "luminance": 0.0663
}

Semantic roles & 50–950 ramp

primary

#1C40A5

secondary

#C6A956

accent

#BF3AEE

background

#F7F7FC

surface

#EDEDF8

border

#C8C8D1

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1C40A5

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

Preview Lab → · Contrast checker → · Palette generator →