#1D0057
Closest named color: Dark Indigo (#1F0954). oklch(23% 0.134 284.9), rgb(29, 0, 87).
Aa
White text reads best on this color (17.64:1).
About this color
#1D0057 is a very dark, moderately saturated purple. In OKLCH its lightness is 23%, its chroma 0.134 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.016 away. White text reads best on it, at 17.64:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.18:1 |
| White text | 17.64:1 |
Values
| HEX | #1D0057 |
| RGB | rgb(29, 0, 87) |
| HSL | hsl(260, 100%, 17%) |
| OKLCH | oklch(23% 0.134 284.9) |
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 #1D0057 | 17.64:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #1D0057 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #1D0057 text on white | 17.64:1 | AAA | Lc 103.4 | Preferred for body text |
| #1D0057 text on black | 1.18:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
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
#D4D5FF
oklch(88.6% 0.058 284.1)
-
Step 300
300
#B9B8FF
oklch(80.9% 0.1 284.6)
-
Step 400
400
#988FFF
oklch(70.7% 0.16 285.2)
-
Step 500
500
#816EFF
oklch(63.1% 0.207 284.7)
-
Step 600
600
#6F44FF
oklch(55.6% 0.257 285)
-
Step 700
700
#6100F7
oklch(49% 0.287 284.9)
-
Step 800
800
#4F00CD
oklch(42.6% 0.249 284.8)
-
Step 900
900
#410CAA
oklch(37.7% 0.212 284.7)
-
Step 950
950 (this color)
#1D0057
oklch(23% 0.134 284.9)
#1D0057 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) | #001B59 | 0.058 |
| Deuteranopia (no green cones) | #001656 | 0.052 |
| Tritanopia (no blue cones) | #001E30 | 0.106 |
| Achromatopsia (no color) | #191919 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D0057
#1D0057
oklch(23% 0.134 284.9)
- #201E00
#201E00
oklch(23% 0.049 106.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes and gradients that use #1D0057
These curated palettes and gradients contain exactly #1D0057. Open one to see the full color scheme around it.
Gradients
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.016
- Darkblue #030764 ΔE 0.051
- Night Blue #040348 ΔE 0.056
- Navy Blue #001146 ΔE 0.059
- Dark Royal Blue #02066F ΔE 0.064
- Midnight Blue #191970 ΔE 0.066
- Deep Blue #040273 ΔE 0.068
- Midnight Purple #280137 ΔE 0.071
Use #1D0057 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.