#1C40A0#1C40A0

#1C40A0 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.0% C 0.161 H 264.5°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#1C40A0
RGB	rgb(28, 64, 160)
HSL	hsl(224, 70%, 37%)
HSV	hsv(224, 83%, 63%)
CMYK	cmyk(82.5%, 60%, 0%, 37.3%)
CIE-LAB	lab(30.52, 24.42, -55.53)
CIE-LCH	lch(30.52, 60.66, 293.74°)
OKLab	oklab(41.01% -0.0154 -0.1605)
OKLCH	oklch(41.01% 0.161 264.5)
XYZ	xyz(8.6552, 6.4507, 34.0398)
Luminance	0.0645 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C40A0 #A07C1C

analogous

#1C82A0 #1C40A0 #3A1CA0

triadic

#1C40A0 #A01C40 #40A01C

tetradic

#1C40A0 #A01C82 #A07C1C #1CA03A

square

#1C40A0 #A01C82 #A07C1C #1CA03A

split-complementary

#1C40A0 #A03A1C #82A01C

monochromatic

#0A1638 #132B6C #1C40A0 #2555D4 #557BE1

Accessibility & contrast

On white

9.17

#1C40A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1C40A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C40A0

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C40A0	#FFFFFF	#000000	##FFFFFF
##1C40A0	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA3

Deuteranopia (green-blind)

#00429E

Tritanopia (blue-blind)

#005869

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1c40a0;
/* rgb */ color: rgb(28, 64, 160);
/* oklch */ color: oklch(41.0% 0.161 264.5);

Tailwind

colors: {
  custom: {
    50: '#7074bd',
    500: '#1c40a0',
    950: '#000000',
  },
}

SCSS

$custom: #1c40a0;
$custom-light: #7074bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1c40a0",
  "rgb": {
    "r": 28,
    "g": 64,
    "b": 160
  },
  "hsl": {
    "h": 223.636,
    "s": 70.213,
    "l": 36.863
  },
  "oklch": {
    "l": 0.41005,
    "c": 0.16128,
    "h": 264.5
  },
  "luminance": 0.06452
}

Semantic roles & 50–950 ramp

primary

#1C40A0

secondary

#C4A653

accent

#BC3BED

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1C40A0

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

Preview Lab → · Contrast checker → · Palette generator →