#1F1147
Closest named color: Dark Indigo (#1F0954). oklch(23.6% 0.095 288.8), rgb(31, 17, 71).
Aa
White text reads best on this color (17.08:1).
About this color
#1F1147 is a very dark, moderately saturated purple. In OKLCH its lightness is 24%, its chroma 0.095 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.027 away. White text reads best on it, at 17.08:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.22:1 |
| White text | 17.08:1 |
Values
| HEX | #1F1147 |
| RGB | rgb(31, 17, 71) |
| HSL | hsl(256, 61%, 17%) |
| OKLCH | oklch(23.6% 0.095 288.8) |
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 #1F1147 | 17.08:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #1F1147 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #1F1147 text on white | 17.08:1 | AAA | Lc 103.7 | Preferred for body text |
| #1F1147 text on black | 1.22:1 | 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
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E8E7FF
oklch(93.6% 0.032 287.7)
-
Step 200
200
#D7D3FF
oklch(88.4% 0.06 289.3)
-
Step 300
300
#BEB6FF
oklch(80.9% 0.102 288.9)
-
Step 400
400
#9F8CFF
oklch(70.7% 0.164 289.1)
-
Step 500
500
#8A69FF
oklch(63.1% 0.213 288.9)
-
Step 600
600
#7843F8
oklch(55.7% 0.25 289)
-
Step 700
700
#6531D8
oklch(49% 0.233 288.9)
-
Step 800
800
#522CAF
oklch(42.8% 0.193 288.7)
-
Step 900
900
#432A8A
oklch(37.6% 0.151 289)
-
Step 950
950 (this color)
#1F1147
oklch(23.6% 0.095 288.8)
#1F1147 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) | #001D49 | 0.050 |
| Deuteranopia (no green cones) | #001A46 | 0.048 |
| Tritanopia (no blue cones) | #111F2A | 0.078 |
| Achromatopsia (no color) | #1C1C1C | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1147
#1F1147
oklch(23.6% 0.095 288.8)
- #202000
#202000
oklch(23.6% 0.051 109.8)
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 #1F1147, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.027
- Midnight Purple #280137 ΔE 0.051
- Navy Blue #001146 ΔE 0.052
- Dark Purple #35063E ΔE 0.056
- Very Dark Purple #2A0134 ΔE 0.056
- Deep Purple #36013F ΔE 0.061
- Night Blue #040348 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.069
Use #1F1147 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.