#1F101E
Closest named color: Rich Black (#0D1B2A). oklch(20.1% 0.036 329.2), rgb(31, 16, 30).
Aa
White text reads best on this color (18.24:1).
About this color
#1F101E is a very dark, muted purple. In OKLCH its lightness is 20%, its chroma 0.036 and its hue 329°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.048 away. White text reads best on it, at 18.24:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | muted (0.036) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.24:1 |
Values
| HEX | #1F101E |
| RGB | rgb(31, 16, 30) |
| HSL | hsl(304, 32%, 9%) |
| OKLCH | oklch(20.1% 0.036 329.2) |
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 #1F101E | 18.24:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #1F101E | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #1F101E text on white | 18.24:1 | AAA | Lc 104.9 | Preferred for body text |
| #1F101E text on black | 1.15:1 | 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
#F8F4F7
oklch(97.1% 0.006 334)
-
Step 100
100
#EFE7EE
oklch(93.6% 0.013 329.6)
-
Step 200
200
#E2D4E1
oklch(88.5% 0.023 328)
-
Step 300
300
#D1B7CE
oklch(80.9% 0.043 329.7)
-
Step 400
400
#B992B5
oklch(70.7% 0.067 329.7)
-
Step 500
500
#A776A3
oklch(63% 0.087 329.4)
-
Step 600
600
#925F8E
oklch(55.7% 0.093 329.5)
-
Step 700
700
#7C4E79
oklch(49.1% 0.087 329.1)
-
Step 800
800
#654062
oklch(42.7% 0.072 329.6)
-
Step 900
900
#523750
oklch(37.8% 0.055 329.1)
-
Step 950
950 (this color)
#1F101E
oklch(20.1% 0.036 329.2)
#1F101E 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) | #0F141F | 0.034 |
| Deuteranopia (no green cones) | #13161E | 0.031 |
| Tritanopia (no blue cones) | #201115 | 0.020 |
| Achromatopsia (no color) | #151515 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F101E
#1F101E
oklch(20.1% 0.036 329.2)
- #091B0D
#091B0D
oklch(20.2% 0.037 149.4)
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 #1F101E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.048
- Rich Navy #001219 ΔE 0.062
- Almost Black #070D0D ΔE 0.065
- Very Dark Purple #2A0134 ΔE 0.065
- Midnight Purple #280137 ΔE 0.068
- Dark #1B2431 ΔE 0.069
- Very Dark Brown #1D0200 ΔE 0.071
- Jet #212529 ΔE 0.071
Use #1F101E 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.