#1D40A1#1D40A1

#1D40A1 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.1% C 0.162 H 264.8°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#1D40A1
RGB	rgb(29, 64, 161)
HSL	hsl(224, 69%, 37%)
HSV	hsv(224, 82%, 63%)
CMYK	cmyk(82%, 60.2%, 0%, 36.9%)
CIE-LAB	lab(30.64, 24.91, -55.94)
CIE-LCH	lch(30.64, 61.23, 294.00°)
OKLab	oklab(41.13% -0.0146 -0.1617)
OKLCH	oklch(41.13% 0.162 264.8)
XYZ	xyz(8.7708, 6.5002, 34.5037)
Luminance	0.0650 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D40A1 #A17E1D

analogous

#1D82A1 #1D40A1 #3C1DA1

triadic

#1D40A1 #A11D40 #40A11D

tetradic

#1D40A1 #A11D82 #A17E1D #1DA13C

square

#1D40A1 #A11D82 #A17E1D #1DA13C

split-complementary

#1D40A1 #A13C1D #82A11D

monochromatic

#0A1739 #142B6D #1D40A1 #2655D5 #587CE1

Accessibility & contrast

On white

9.13

#1D40A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#1D40A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D40A1

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D40A1	#FFFFFF	#000000	##FFFFFF
##1D40A1	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA4

Deuteranopia (green-blind)

#00429F

Tritanopia (blue-blind)

#00596A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1d40a1;
/* rgb */ color: rgb(29, 64, 161);
/* oklch */ color: oklch(41.1% 0.162 264.8);

Tailwind

colors: {
  custom: {
    50: '#7174be',
    500: '#1d40a1',
    950: '#000000',
  },
}

SCSS

$custom: #1d40a1;
$custom-light: #7174be;
$custom-dark: #000000;

JSON

{
  "hex": "#1d40a1",
  "rgb": {
    "r": 29,
    "g": 64,
    "b": 161
  },
  "hsl": {
    "h": 224.091,
    "s": 69.474,
    "l": 37.255
  },
  "oklch": {
    "l": 0.4113,
    "c": 0.1624,
    "h": 264.8
  },
  "luminance": 0.06501
}

Semantic roles & 50–950 ramp

primary

#1D40A1

secondary

#C4A755

accent

#BD3CEC

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1D40A1

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

Preview Lab → · Contrast checker → · Palette generator →