#1D40A6#1D40A6

#1D40A6 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.6% C 0.169 H 265.1°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).

Color values

HEX	#1D40A6
RGB	rgb(29, 64, 166)
HSL	hsl(225, 70%, 38%)
HSV	hsv(225, 83%, 65%)
CMYK	cmyk(82.5%, 61.4%, 0%, 34.9%)
CIE-LAB	lab(31.07, 26.87, -58.25)
CIE-LCH	lch(31.07, 64.15, 294.76°)
OKLab	oklab(41.58% -0.0145 -0.1685)
OKLCH	oklch(41.58% 0.169 265.1)
XYZ	xyz(9.2206, 6.6801, 36.8724)
Luminance	0.0668 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D40A6 #A6831D

analogous

#1D84A6 #1D40A6 #3F1DA6

triadic

#1D40A6 #A61D40 #40A61D

tetradic

#1D40A6 #A61D84 #A6831D #1DA63F

square

#1D40A6 #A61D84 #A6831D #1DA63F

split-complementary

#1D40A6 #A63F1D #84A61D

monochromatic

#0B183E #142C72 #1D40A6 #2754D9 #5B7EE2

Accessibility & contrast

On white

8.99

#1D40A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#1D40A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D40A6

8.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D40A6	#FFFFFF	#000000	##FFFFFF
##1D40A6	1.00	8.99	2.34	8.99
#FFFFFF	8.99	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A9

Deuteranopia (green-blind)

#0043A4

Tritanopia (blue-blind)

#005A6C

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #1d40a6;
/* rgb */ color: rgb(29, 64, 166);
/* oklch */ color: oklch(41.6% 0.169 265.1);

Tailwind

colors: {
  custom: {
    50: '#7274c1',
    500: '#1d40a6',
    950: '#000000',
  },
}

SCSS

$custom: #1d40a6;
$custom-light: #7274c1;
$custom-dark: #000000;

JSON

{
  "hex": "#1d40a6",
  "rgb": {
    "r": 29,
    "g": 64,
    "b": 166
  },
  "hsl": {
    "h": 224.672,
    "s": 70.256,
    "l": 38.235
  },
  "oklch": {
    "l": 0.4158,
    "c": 0.16915,
    "h": 265.1
  },
  "luminance": 0.06681
}

Semantic roles & 50–950 ramp

primary

#1D40A6

secondary

#C6AA59

accent

#BF3BED

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1D40A6

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

Preview Lab → · Contrast checker → · Palette generator →