#1F1C4E
Closest named color: Dark Indigo (#1F0954). oklch(26.3% 0.089 281), rgb(31, 28, 78).
Aa
White text reads best on this color (15.73:1).
About this color
#1F1C4E is a dark, moderately saturated purple. In OKLCH its lightness is 26%, its chroma 0.089 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.042 away. White text reads best on it, at 15.73:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.33:1 |
| White text | 15.73:1 |
Values
| HEX | #1F1C4E |
| RGB | rgb(31, 28, 78) |
| HSL | hsl(244, 47%, 21%) |
| OKLCH | oklch(26.3% 0.089 281) |
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 #1F1C4E | 15.73:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #1F1C4E | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #1F1C4E text on white | 15.73:1 | AAA | Lc 102.5 | Preferred for body text |
| #1F1C4E text on black | 1.33:1 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E6E8FF
oklch(93.6% 0.031 281.8)
-
Step 200
200
#D2D6FF
oklch(88.6% 0.057 280.8)
-
Step 300
300
#B5BAFF
oklch(81% 0.097 280.8)
-
Step 400
400
#9192FF
oklch(70.7% 0.157 281.2)
-
Step 500
500
#7972FF
oklch(63.2% 0.203 281.1)
-
Step 600
600
#6551F5
oklch(55.7% 0.233 281.2)
-
Step 700
700
#543FD6
oklch(49% 0.218 281)
-
Step 800
800
#4436AD
oklch(42.7% 0.181 280.8)
-
Step 900
900
#383189
oklch(37.7% 0.141 280.8)
-
Step 950
950 (this color)
#1F1C4E
oklch(26.3% 0.089 281)
#1F1C4E 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) | #002550 | 0.040 |
| Deuteranopia (no green cones) | #00214D | 0.038 |
| Tritanopia (no blue cones) | #092831 | 0.078 |
| Achromatopsia (no color) | #232323 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1C4E
#1F1C4E
oklch(26.3% 0.089 281)
- #2B2500
#2B2500
oklch(26.3% 0.055 100.1)
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 #1F1C4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.051
- Marine #042E60 ΔE 0.061
- Midnight Blue #191970 ΔE 0.062
- Navy Blue #001146 ΔE 0.062
- Dark #1B2431 ΔE 0.065
- Space Cadet #2B2D42 ΔE 0.066
- Dark Purple #35063E ΔE 0.069
Use #1F1C4E 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.