#1F1544
Closest named color: Dark Indigo (#1F0954). oklch(24% 0.084 288.1), rgb(31, 21, 68).
Aa
White text reads best on this color (16.81:1).
About this color
#1F1544 is a very dark, moderately saturated purple. In OKLCH its lightness is 24%, its chroma 0.084 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.037 away. White text reads best on it, at 16.81:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.24:1 |
| White text | 16.81:1 |
Values
| HEX | #1F1544 |
| RGB | rgb(31, 21, 68) |
| HSL | hsl(253, 53%, 17%) |
| OKLCH | oklch(24% 0.084 288.1) |
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 #1F1544 | 16.81:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #1F1544 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #1F1544 text on white | 16.81:1 | AAA | Lc 103.5 | Preferred for body text |
| #1F1544 text on black | 1.24:1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E8E7FD
oklch(93.5% 0.03 287.9)
-
Step 200
200
#D7D4FD
oklch(88.5% 0.056 288.5)
-
Step 300
300
#BDB7FE
oklch(81% 0.099 287.8)
-
Step 400
400
#9D8DFD
oklch(70.6% 0.16 288.1)
-
Step 500
500
#886CFB
oklch(63.1% 0.204 288.1)
-
Step 600
600
#744EEA
oklch(55.6% 0.222 288.1)
-
Step 700
700
#623DCC
oklch(49.1% 0.207 288.1)
-
Step 800
800
#5034A5
oklch(42.8% 0.172 288.3)
-
Step 900
900
#412F83
oklch(37.6% 0.135 288)
-
Step 950
950 (this color)
#1F1544
oklch(24% 0.084 288.1)
#1F1544 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) | #001E46 | 0.046 |
| Deuteranopia (no green cones) | #001C43 | 0.046 |
| Tritanopia (no blue cones) | #13202A | 0.069 |
| Achromatopsia (no color) | #1D1D1D | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1544
#1F1544
oklch(24% 0.084 288.1)
- #222100
#222100
oklch(24.1% 0.052 108.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1F1544, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.037
- Navy Blue #001146 ΔE 0.054
- Midnight Purple #280137 ΔE 0.054
- Dark Purple #35063E ΔE 0.057
- Oxford Blue #1B263B ΔE 0.058
- Very Dark Purple #2A0134 ΔE 0.059
- Deep Purple #36013F ΔE 0.063
- Rich Black #0D1B2A ΔE 0.064
Use #1F1544 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.