#1F1247
Closest named color: Dark Indigo (#1F0954). oklch(23.7% 0.094 288.4), rgb(31, 18, 71).
Aa
White text reads best on this color (16.99:1).
About this color
#1F1247 is a very dark, moderately saturated purple. In OKLCH its lightness is 24%, its chroma 0.094 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.028 away. White text reads best on it, at 16.99:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.23:1 |
| White text | 16.99:1 |
Values
| HEX | #1F1247 |
| RGB | rgb(31, 18, 71) |
| HSL | hsl(255, 60%, 17%) |
| OKLCH | oklch(23.7% 0.094 288.4) |
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 #1F1247 | 16.99:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #1F1247 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #1F1247 text on white | 16.99:1 | AAA | Lc 103.6 | Preferred for body text |
| #1F1247 text on black | 1.23:1 | 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
#D7D4FF
oklch(88.6% 0.059 288.3)
-
Step 300
300
#BDB6FF
oklch(80.8% 0.102 288.3)
-
Step 400
400
#9E8DFF
oklch(70.8% 0.163 288.4)
-
Step 500
500
#896AFF
oklch(63.1% 0.212 288.4)
-
Step 600
600
#7645F6
oklch(55.6% 0.245 288.4)
-
Step 700
700
#6434D7
oklch(49.2% 0.229 288.3)
-
Step 800
800
#512DAE
oklch(42.7% 0.19 288.3)
-
Step 900
900
#422B89
oklch(37.6% 0.148 288.4)
-
Step 950
950 (this color)
#1F1247
oklch(23.7% 0.094 288.4)
#1F1247 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 | 0.048 |
| Deuteranopia (no green cones) | #001B46 | 0.048 |
| Tritanopia (no blue cones) | #111F2A | 0.076 |
| Achromatopsia (no color) | #1C1C1C | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1247
#1F1247
oklch(23.7% 0.094 288.4)
- #212000
#212000
oklch(23.7% 0.051 108)
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 #1F1247, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.028
- Navy Blue #001146 ΔE 0.052
- Midnight Purple #280137 ΔE 0.052
- Dark Purple #35063E ΔE 0.056
- Very Dark Purple #2A0134 ΔE 0.057
- Deep Purple #36013F ΔE 0.062
- Night Blue #040348 ΔE 0.066
- Oxford Blue #1B263B ΔE 0.067
Use #1F1247 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.