#1D40A0#1D40A0

#1D40A0 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.0% C 0.161 H 264.8°. Best body text is #FFFFFF at 9.16:1 contrast (WCAG AA passes).

Color values

HEX	#1D40A0
RGB	rgb(29, 64, 160)
HSL	hsl(224, 69%, 37%)
HSV	hsv(224, 82%, 63%)
CMYK	cmyk(81.9%, 60%, 0%, 37.3%)
CIE-LAB	lab(30.56, 24.51, -55.47)
CIE-LCH	lch(30.56, 60.65, 293.84°)
OKLab	oklab(41.04% -0.0147 -0.1604)
OKLCH	oklch(41.04% 0.161 264.8)
XYZ	xyz(8.6830, 6.4650, 34.0411)
Luminance	0.0647 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D40A0 #A07D1D

analogous

#1D82A0 #1D40A0 #3B1DA0

triadic

#1D40A0 #A01D40 #40A01D

tetradic

#1D40A0 #A01D82 #A07D1D #1DA03B

square

#1D40A0 #A01D82 #A07D1D #1DA03B

split-complementary

#1D40A0 #A03B1D #82A01D

monochromatic

#0A1738 #142B6C #1D40A0 #2655D4 #577CE1

Accessibility & contrast

On white

9.16

#1D40A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#1D40A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D40A0

9.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D40A0	#FFFFFF	#000000	##FFFFFF
##1D40A0	1.00	9.16	2.29	9.16
#FFFFFF	9.16	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.16	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: #1d40a0;
/* rgb */ color: rgb(29, 64, 160);
/* oklch */ color: oklch(41.0% 0.161 264.8);

Tailwind

colors: {
  custom: {
    50: '#7074bd',
    500: '#1d40a0',
    950: '#000000',
  },
}

SCSS

$custom: #1d40a0;
$custom-light: #7074bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d40a0",
  "rgb": {
    "r": 29,
    "g": 64,
    "b": 160
  },
  "hsl": {
    "h": 223.969,
    "s": 69.312,
    "l": 37.059
  },
  "oklch": {
    "l": 0.41041,
    "c": 0.16104,
    "h": 264.8
  },
  "luminance": 0.06466
}

Semantic roles & 50–950 ramp

primary

#1D40A0

secondary

#C4A655

accent

#BD3CEC

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1D40A0

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

Preview Lab → · Contrast checker → · Palette generator →