Dark Indigo #1F0954
Dark Indigo is a very dark, moderately saturated purple with hex code #1F0954 and RGB rgb(31, 9, 84).
Aa
White text reads best on this color (17.13:1).
About this color
#1F0954 is a very dark, moderately saturated purple. In OKLCH its lightness is 24%, its chroma 0.122 and its hue 286°. Its hue sits on the cool side of the wheel. It is the named color Dark Indigo. White text reads best on it, at 17.13:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Dark Indigo |
| Black text | 1.22:1 |
| White text | 17.13:1 |
Colors that go with Dark Indigo
Matches found by rotating Dark Indigo around the OKLCH hue wheel, each labelled with the closest name in our list.
Complementary
The opposite hue (180°).
Analogous
Neighbouring hues, 30° either side.
Triadic
Three hues spaced 120° apart.
Color palettes with Dark Indigo
Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Dark Indigo, closest first.
Similar named colors
The eight named colors closest to Dark Indigo, with their ΔE distance.
- Darkblue #030764 ΔE 0.056
- Navy Blue #001146 ΔE 0.057
- Night Blue #040348 ΔE 0.062
- Midnight Blue #191970 ΔE 0.062
- Midnight Purple #280137 ΔE 0.065
- Dark Royal Blue #02066F ΔE 0.069
- Dark Purple #35063E ΔE 0.069
- Deep Purple #36013F ΔE 0.071
More about Dark Indigo
How to make Dark Indigo
A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.
- 2 parts purple
- 1 part black
Recipe result: #312632, a difference of ΔE 0.112 from Dark Indigo. Dark Indigo is more vivid than these paints can mix, so start from a ready-made purple paint and adjust it.
Codes for Dark Indigo in every format
| HEX | #1F0954 |
| RGB | rgb(31, 9, 84) |
| HSL | hsl(258, 81%, 18%) |
| OKLCH | oklch(23.9% 0.122 286.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #1F0954 | 17.13:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #1F0954 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #1F0954 text on white | 17.13:1 | AAA | Lc 103.4 | Preferred for body text |
| #1F0954 text on black | 1.22:1 | Fails | Lc 0.0 | Not readable |
Shades and tints of Dark Indigo
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E7E7FF
oklch(93.5% 0.032 285.8)
-
Step 200
200
#D5D4FF
oklch(88.5% 0.059 286.2)
-
Step 300
300
#BBB7FF
oklch(80.9% 0.101 286.5)
-
Step 400
400
#9A8FFF
oklch(70.8% 0.16 286)
-
Step 500
500
#846DFF
oklch(63.2% 0.208 286)
-
Step 600
600
#7242FF
oklch(55.6% 0.258 286.1)
-
Step 700
700
#6400F5
oklch(49.1% 0.285 286.2)
-
Step 800
800
#5102CB
oklch(42.6% 0.247 285.9)
-
Step 900
900
#421B9F
oklch(37.7% 0.191 286.3)
-
Step 950
950 (this color)
#1F0954
oklch(23.9% 0.122 286.1)
Dark Indigo with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #001D56 | 0.054 |
| Deuteranopia (no green cones) | #001953 | 0.050 |
| Tritanopia (no blue cones) | #04202F | 0.100 |
| Achromatopsia (no color) | #1B1B1B | 0.123 |
Use Dark Indigo in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.