#1D2B81#1D2B81

#1D2B81 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 34.0% C 0.145 H 269.6°. Best body text is #FFFFFF at 12.25:1 contrast (WCAG AA passes).

Color values

HEX	#1D2B81
RGB	rgb(29, 43, 129)
HSL	hsl(232, 63%, 31%)
HSV	hsv(232, 78%, 51%)
CMYK	cmyk(77.5%, 66.7%, 0%, 49.4%)
CIE-LAB	lab(22.21, 26.71, -50.00)
CIE-LCH	lch(22.21, 56.68, 298.12°)
OKLab	oklab(34% -0.0011 -0.1446)
OKLCH	oklch(34% 0.145 269.6)
XYZ	xyz(5.3317, 3.5734, 21.1734)
Luminance	0.0357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2B81 #81731D

analogous

#1D5D81 #1D2B81 #411D81

triadic

#1D2B81 #811D2B #2B811D

tetradic

#1D2B81 #811D5D #81731D #1D8141

square

#1D2B81 #811D5D #81731D #1D8141

split-complementary

#1D2B81 #81411D #5D811D

monochromatic

#070A1D #121A4F #1D2B81 #283CB3 #4458D5

Accessibility & contrast

On white

12.25

#1D2B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#1D2B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2B81

12.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2B81	#FFFFFF	#000000	##FFFFFF
##1D2B81	1.00	12.25	1.71	12.25
#FFFFFF	12.25	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A84

Deuteranopia (green-blind)

#00307F

Tritanopia (blue-blind)

#004252

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #1d2b81;
/* rgb */ color: rgb(29, 43, 129);
/* oklch */ color: oklch(34.0% 0.145 269.6);

Tailwind

colors: {
  custom: {
    50: '#6a64a6',
    500: '#1d2b81',
    950: '#000000',
  },
}

SCSS

$custom: #1d2b81;
$custom-light: #6a64a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2b81",
  "rgb": {
    "r": 29,
    "g": 43,
    "b": 129
  },
  "hsl": {
    "h": 231.6,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.33997,
    "c": 0.14458,
    "h": 269.6
  },
  "luminance": 0.03574
}

Semantic roles & 50–950 ramp

primary

#1D2B81

secondary

#B4A546

accent

#CF41E6

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #1D2B81

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

Preview Lab → · Contrast checker → · Palette generator →