#1F1045
Closest named color: Dark Indigo (#1F0954). oklch(23.2% 0.094 290.1), rgb(31, 16, 69).
Aa
White text reads best on this color (17.23:1).
About this color
#1F1045 is a very dark, moderately saturated purple. In OKLCH its lightness is 23%, its chroma 0.094 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.030 away. White text reads best on it, at 17.23:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.21:1 |
| White text | 17.23:1 |
Values
| HEX | #1F1045 |
| RGB | rgb(31, 16, 69) |
| HSL | hsl(257, 62%, 17%) |
| OKLCH | oklch(23.2% 0.094 290.1) |
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 #1F1045 | 17.23:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #1F1045 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #1F1045 text on white | 17.23:1 | AAA | Lc 103.8 | Preferred for body text |
| #1F1045 text on black | 1.21:1 | 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
#E9E7FE
oklch(93.6% 0.031 289.8)
-
Step 200
200
#D8D3FF
oklch(88.5% 0.06 290.3)
-
Step 300
300
#BFB5FF
oklch(80.8% 0.104 290.1)
-
Step 400
400
#A18BFF
oklch(70.7% 0.166 290.2)
-
Step 500
500
#8D68FF
oklch(63.2% 0.214 290.2)
-
Step 600
600
#7A43F5
oklch(55.6% 0.246 290.1)
-
Step 700
700
#6732D5
oklch(49% 0.229 290)
-
Step 800
800
#542CAC
oklch(42.7% 0.189 290.3)
-
Step 900
900
#442A88
oklch(37.6% 0.148 290.1)
-
Step 950
950 (this color)
#1F1045
oklch(23.2% 0.094 290.1)
#1F1045 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) | #001C47 | 0.051 |
| Deuteranopia (no green cones) | #001A44 | 0.050 |
| Tritanopia (no blue cones) | #121D29 | 0.074 |
| Achromatopsia (no color) | #1B1B1B | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1045
#1F1045
oklch(23.2% 0.094 290.1)
- #1F1F00
#1F1F00
oklch(23.2% 0.05 109.8)
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 #1F1045, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.030
- Midnight Purple #280137 ΔE 0.047
- Navy Blue #001146 ΔE 0.052
- Very Dark Purple #2A0134 ΔE 0.053
- Dark Purple #35063E ΔE 0.055
- Deep Purple #36013F ΔE 0.059
- Night Blue #040348 ΔE 0.064
- Eggplant #380835 ΔE 0.067
Use #1F1045 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.