#1F1947
Closest named color: Dark Indigo (#1F0954). oklch(25.1% 0.083 284.7), rgb(31, 25, 71).
Aa
White text reads best on this color (16.30:1).
About this color
#1F1947 is a dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.083 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.041 away. White text reads best on it, at 16.30:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.28:1 |
| White text | 16.30:1 |
Values
| HEX | #1F1947 |
| RGB | rgb(31, 25, 71) |
| HSL | hsl(248, 48%, 19%) |
| OKLCH | oklch(25.1% 0.083 284.7) |
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 #1F1947 | 16.30:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #1F1947 | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #1F1947 text on white | 16.30:1 | AAA | Lc 103.1 | Preferred for body text |
| #1F1947 text on black | 1.28:1 | 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E7E8FD
oklch(93.7% 0.028 283.7)
-
Step 200
200
#D4D5FD
oklch(88.5% 0.055 284.1)
-
Step 300
300
#B9B8FE
oklch(80.9% 0.098 284.6)
-
Step 400
400
#9790FD
oklch(70.6% 0.156 284.6)
-
Step 500
500
#8170FB
oklch(63.2% 0.199 284.7)
-
Step 600
600
#6D53EA
oklch(55.7% 0.217 284.8)
-
Step 700
700
#5B41CC
oklch(49% 0.203 284.6)
-
Step 800
800
#4A37A5
oklch(42.7% 0.168 284.6)
-
Step 900
900
#3D3283
oklch(37.8% 0.131 284.4)
-
Step 950
950 (this color)
#1F1947
oklch(25.1% 0.083 284.7)
#1F1947 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) | #002149 | 0.042 |
| Deuteranopia (no green cones) | #001F46 | 0.042 |
| Tritanopia (no blue cones) | #10242D | 0.070 |
| Achromatopsia (no color) | #202020 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1947
#1F1947
oklch(25.1% 0.083 284.7)
- #262300
#262300
oklch(25.1% 0.053 104.8)
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 #1F1947, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.050
- Navy Blue #001146 ΔE 0.057
- Dark #1B2431 ΔE 0.060
- Dark Purple #35063E ΔE 0.062
- Midnight Purple #280137 ΔE 0.065
- Rich Black #0D1B2A ΔE 0.065
- Deep Purple #36013F ΔE 0.068
Use #1F1947 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.