#1F0F40
Closest named color: Dark Indigo (#1F0954). oklch(22.5% 0.088 293), rgb(31, 15, 64).
Aa
White text reads best on this color (17.49:1).
About this color
#1F0F40 is a very dark, moderately saturated purple. In OKLCH its lightness is 23%, its chroma 0.088 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.038 away. White text reads best on it, at 17.49:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.088) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.20:1 |
| White text | 17.49:1 |
Values
| HEX | #1F0F40 |
| RGB | rgb(31, 15, 64) |
| HSL | hsl(260, 62%, 15%) |
| OKLCH | oklch(22.5% 0.088 293) |
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 #1F0F40 | 17.49:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #1F0F40 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #1F0F40 text on white | 17.49:1 | AAA | Lc 104.0 | Preferred for body text |
| #1F0F40 text on black | 1.20:1 | 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
#EAE7FD
oklch(93.7% 0.03 292.1)
-
Step 200
200
#DAD3FD
oklch(88.6% 0.058 292.8)
-
Step 300
300
#C3B4FE
oklch(80.9% 0.104 293.2)
-
Step 400
400
#A689FE
oklch(70.7% 0.167 293)
-
Step 500
500
#9266FC
oklch(63.1% 0.213 292.8)
-
Step 600
600
#7F46EB
oklch(55.6% 0.232 293.1)
-
Step 700
700
#6B36CC
oklch(49.1% 0.215 292.8)
-
Step 800
800
#572FA5
oklch(42.8% 0.178 292.8)
-
Step 900
900
#472C83
oklch(37.8% 0.139 292.8)
-
Step 950
950 (this color)
#1F0F40
oklch(22.5% 0.088 293)
#1F0F40 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) | #001A41 | 0.052 |
| Deuteranopia (no green cones) | #00193F | 0.052 |
| Tritanopia (no blue cones) | #151B26 | 0.069 |
| Achromatopsia (no color) | #1A1A1A | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F0F40
#1F0F40
oklch(22.5% 0.088 293)
- #1C1E00
#1C1E00
oklch(22.5% 0.05 113.3)
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 #1F0F40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.038
- Midnight Purple #280137 ΔE 0.040
- Very Dark Purple #2A0134 ΔE 0.046
- Dark Purple #35063E ΔE 0.053
- Navy Blue #001146 ΔE 0.054
- Deep Purple #36013F ΔE 0.057
- Eggplant #380835 ΔE 0.063
- Night Blue #040348 ΔE 0.065
Use #1F0F40 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.