#1D2B71#1D2B71

#1D2B71 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.5% C 0.122 H 269.7°. Best body text is #FFFFFF at 12.83:1 contrast (WCAG AA passes).

Color values

HEX	#1D2B71
RGB	rgb(29, 43, 113)
HSL	hsl(230, 59%, 28%)
HSV	hsv(230, 74%, 44%)
CMYK	cmyk(74.3%, 61.9%, 0%, 55.7%)
CIE-LAB	lab(20.75, 20.43, -42.18)
CIE-LCH	lch(20.75, 46.87, 295.84°)
OKLab	oklab(32.47% -0.0007 -0.1217)
OKLCH	oklch(32.47% 0.122 269.7)
XYZ	xyz(4.3502, 3.1808, 16.0043)
Luminance	0.0318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2B71 #71631D

analogous

#1D5571 #1D2B71 #391D71

triadic

#1D2B71 #711D2B #2B711D

tetradic

#1D2B71 #711D55 #71631D #1D7139

square

#1D2B71 #711D55 #71631D #1D7139

split-complementary

#1D2B71 #71391D #55711D

monochromatic

#060918 #111840 #1D2B71 #293EA2 #3C54CD

Accessibility & contrast

On white

12.83

#1D2B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#1D2B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2B71

12.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2B71	#FFFFFF	#000000	##FFFFFF
##1D2B71	1.00	12.83	1.64	12.83
#FFFFFF	12.83	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003673

Deuteranopia (green-blind)

#002E70

Tritanopia (blue-blind)

#003C49

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #1d2b71;
/* rgb */ color: rgb(29, 43, 113);
/* oklch */ color: oklch(32.5% 0.122 269.7);

Tailwind

colors: {
  custom: {
    50: '#66649a',
    500: '#1d2b71',
    950: '#000000',
  },
}

SCSS

$custom: #1d2b71;
$custom-light: #66649a;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2b71",
  "rgb": {
    "r": 29,
    "g": 43,
    "b": 113
  },
  "hsl": {
    "h": 230,
    "s": 59.155,
    "l": 27.843
  },
  "oklch": {
    "l": 0.32473,
    "c": 0.12166,
    "h": 269.7
  },
  "luminance": 0.03181
}

Semantic roles & 50–950 ramp

primary

#1D2B71

secondary

#A59544

accent

#C845E2

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #1D2B71

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

Preview Lab → · Contrast checker → · Palette generator →