#1C1847
Closest named color: Dark Indigo (#1F0954). oklch(24.6% 0.085 282), rgb(28, 24, 71).
Aa
White text reads best on this color (16.52:1).
About this color
#1C1847 is a very dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.085 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.038 away. White text reads best on it, at 16.52:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.27:1 |
| White text | 16.52:1 |
Values
| HEX | #1C1847 |
| RGB | rgb(28, 24, 71) |
| HSL | hsl(245, 49%, 19%) |
| OKLCH | oklch(24.6% 0.085 282) |
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 #1C1847 | 16.52:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #1C1847 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #1C1847 text on white | 16.52:1 | AAA | Lc 103.3 | Preferred for body text |
| #1C1847 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
#F4F5FF
oklch(97.2% 0.013 281.6)
-
Step 100
100
#E6E8FD
oklch(93.6% 0.028 281.5)
-
Step 200
200
#D3D5FE
oklch(88.5% 0.056 283)
-
Step 300
300
#B6B9FF
oklch(80.9% 0.099 282.1)
-
Step 400
400
#9292FF
oklch(70.8% 0.157 281.6)
-
Step 500
500
#7B71FF
oklch(63.1% 0.204 282)
-
Step 600
600
#6753EF
oklch(55.6% 0.224 282.1)
-
Step 700
700
#5642D0
oklch(49.1% 0.208 282)
-
Step 800
800
#4638A8
oklch(42.7% 0.172 282)
-
Step 900
900
#3A3285
oklch(37.7% 0.134 282.2)
-
Step 950
950 (this color)
#1C1847
oklch(24.6% 0.085 282)
#1C1847 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) | #002049 | 0.038 |
| Deuteranopia (no green cones) | #001D46 | 0.037 |
| Tritanopia (no blue cones) | #09232C | 0.073 |
| Achromatopsia (no color) | #1F1F1F | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C1847
#1C1847
oklch(24.6% 0.085 282)
- #262100
#262100
oklch(24.6% 0.051 101.1)
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 #1C1847, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.038
- Navy Blue #001146 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.053
- Dark #1B2431 ΔE 0.062
- Rich Black #0D1B2A ΔE 0.064
- Midnight Purple #280137 ΔE 0.065
- Dark Purple #35063E ΔE 0.065
- Very Dark Purple #2A0134 ΔE 0.069
Use #1C1847 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.