#1D289A#1D289A

#1D289A is a dark, vivid blue. Relative luminance 0.041; OKLCH L 36.1% C 0.181 H 269.4°. Best body text is #FFFFFF at 11.52:1 contrast (WCAG AA passes).

Color values

HEX	#1D289A
RGB	rgb(29, 40, 154)
HSL	hsl(235, 68%, 36%)
HSV	hsv(235, 81%, 60%)
CMYK	cmyk(81.2%, 74%, 0%, 39.6%)
CIE-LAB	lab(24.04, 37.97, -62.52)
CIE-LCH	lch(24.04, 73.15, 301.27°)
OKLab	oklab(36.09% -0.002 -0.1811)
OKLCH	oklch(36.09% 0.181 269.4)
XYZ	xyz(7.0962, 4.1111, 30.9851)
Luminance	0.0411 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D289A #9A8F1D

analogous

#1D669A #1D289A #501D9A

triadic

#1D289A #9A1D28 #289A1D

tetradic

#1D289A #9A1D66 #9A8F1D #1D9A50

square

#1D289A #9A1D66 #9A8F1D #1D9A50

split-complementary

#1D289A #9A501D #669A1D

monochromatic

#0A0D33 #131B66 #1D289A #2735CE #535FDF

Accessibility & contrast

On white

11.52

#1D289A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#1D289A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D289A

11.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D289A	#FFFFFF	#000000	##FFFFFF
##1D289A	1.00	11.52	1.82	11.52
#FFFFFF	11.52	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F9D

Deuteranopia (green-blind)

#003398

Tritanopia (blue-blind)

#00495E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d289a;
/* rgb */ color: rgb(29, 40, 154);
/* oklch */ color: oklch(36.1% 0.181 269.4);

Tailwind

colors: {
  custom: {
    50: '#7163b9',
    500: '#1d289a',
    950: '#000000',
  },
}

SCSS

$custom: #1d289a;
$custom-light: #7163b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d289a",
  "rgb": {
    "r": 29,
    "g": 40,
    "b": 154
  },
  "hsl": {
    "h": 234.72,
    "s": 68.306,
    "l": 35.882
  },
  "oklch": {
    "l": 0.36088,
    "c": 0.18115,
    "h": 269.4
  },
  "luminance": 0.04112
}

Semantic roles & 50–950 ramp

primary

#1D289A

secondary

#C2B851

accent

#DC3DEB

background

#F7F5FB

surface

#EDEAF6

border

#C8C6D0

text

#090512

muted

#7B7981

Preview Lab

Preview with #1D289A

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

Preview Lab → · Contrast checker → · Palette generator →