#1F1847
Closest named color: Dark Indigo (#1F0954). oklch(24.9% 0.084 285.3), rgb(31, 24, 71).
Aa
White text reads best on this color (16.40:1).
About this color
#1F1847 is a very dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.084 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.039 away. White text reads best on it, at 16.40:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.27:1 |
| White text | 16.40:1 |
Values
| HEX | #1F1847 |
| RGB | rgb(31, 24, 71) |
| HSL | hsl(249, 49%, 19%) |
| OKLCH | oklch(24.9% 0.084 285.3) |
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 #1F1847 | 16.40:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #1F1847 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #1F1847 text on white | 16.40:1 | AAA | Lc 103.2 | Preferred for body text |
| #1F1847 text on black | 1.27:1 | 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
#D5D5FD
oklch(88.6% 0.055 285.2)
-
Step 300
300
#BAB8FF
oklch(81% 0.1 285.2)
-
Step 400
400
#988FFF
oklch(70.7% 0.16 285.2)
-
Step 500
500
#826EFD
oklch(63% 0.205 285.3)
-
Step 600
600
#6E51EC
oklch(55.6% 0.221 285.2)
-
Step 700
700
#5D40CE
oklch(49.2% 0.207 285.3)
-
Step 800
800
#4B36A6
oklch(42.7% 0.171 285.2)
-
Step 900
900
#3E3184
oklch(37.8% 0.133 285.2)
-
Step 950
950 (this color)
#1F1847
oklch(24.9% 0.084 285.3)
#1F1847 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 | 0.044 |
| Deuteranopia (no green cones) | #001E46 | 0.043 |
| Tritanopia (no blue cones) | #10232C | 0.072 |
| Achromatopsia (no color) | #1F1F1F | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1847
#1F1847
oklch(24.9% 0.084 285.3)
- #252200
#252200
oklch(24.7% 0.052 104.7)
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 #1F1847, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.039
- Oxford Blue #1B263B ΔE 0.052
- Navy Blue #001146 ΔE 0.056
- Dark Purple #35063E ΔE 0.061
- Dark #1B2431 ΔE 0.062
- Midnight Purple #280137 ΔE 0.063
- Rich Black #0D1B2A ΔE 0.066
- Very Dark Purple #2A0134 ΔE 0.067
Use #1F1847 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.