#1D43A1#1D43A1

#1D43A1 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.7% C 0.159 H 264.0°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#1D43A1
RGB	rgb(29, 67, 161)
HSL	hsl(223, 69%, 37%)
HSV	hsv(223, 82%, 63%)
CMYK	cmyk(82%, 58.4%, 0%, 36.9%)
CIE-LAB	lab(31.46, 22.87, -54.61)
CIE-LCH	lch(31.46, 59.20, 292.72°)
OKLab	oklab(41.74% -0.0165 -0.1578)
OKLCH	oklch(41.74% 0.159 264)
XYZ	xyz(8.9446, 6.8477, 34.5616)
Luminance	0.0685 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D43A1 #A17B1D

analogous

#1D85A1 #1D43A1 #391DA1

triadic

#1D43A1 #A11D43 #43A11D

tetradic

#1D43A1 #A11D85 #A17B1D #1DA139

square

#1D43A1 #A11D85 #A17B1D #1DA139

split-complementary

#1D43A1 #A1391D #85A11D

monochromatic

#0A1839 #142D6D #1D43A1 #2659D5 #587FE1

Accessibility & contrast

On white

8.86

#1D43A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1D43A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D43A1

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D43A1	#FFFFFF	#000000	##FFFFFF
##1D43A1	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A4

Deuteranopia (green-blind)

#00449F

Tritanopia (blue-blind)

#005B6B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1d43a1;
/* rgb */ color: rgb(29, 67, 161);
/* oklch */ color: oklch(41.7% 0.159 264.0);

Tailwind

colors: {
  custom: {
    50: '#7076be',
    500: '#1d43a1',
    950: '#000000',
  },
}

SCSS

$custom: #1d43a1;
$custom-light: #7076be;
$custom-dark: #000000;

JSON

{
  "hex": "#1d43a1",
  "rgb": {
    "r": 29,
    "g": 67,
    "b": 161
  },
  "hsl": {
    "h": 222.727,
    "s": 69.474,
    "l": 37.255
  },
  "oklch": {
    "l": 0.41742,
    "c": 0.15864,
    "h": 264
  },
  "luminance": 0.06849
}

Semantic roles & 50–950 ramp

primary

#1D43A1

secondary

#C4A455

accent

#B93CEC

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1D43A1

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

Preview Lab → · Contrast checker → · Palette generator →