#1F1027
Closest named color: Rich Black (#0D1B2A). oklch(20.6% 0.048 312.9), rgb(31, 16, 39).
Aa
White text reads best on this color (18.07:1).
About this color
#1F1027 is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.048 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.046 away. White text reads best on it, at 18.07:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.07:1 |
Values
| HEX | #1F1027 |
| RGB | rgb(31, 16, 39) |
| HSL | hsl(279, 42%, 11%) |
| OKLCH | oklch(20.6% 0.048 312.9) |
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 #1F1027 | 18.07:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #1F1027 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #1F1027 text on white | 18.07:1 | AAA | Lc 104.7 | Preferred for body text |
| #1F1027 text on black | 1.16:1 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EEE7F2
oklch(93.7% 0.016 313.6)
-
Step 200
200
#E1D3E9
oklch(88.5% 0.033 313.5)
-
Step 300
300
#CEB6DC
oklch(80.9% 0.059 313.1)
-
Step 400
400
#B590CA
oklch(70.8% 0.092 313)
-
Step 500
500
#A273BC
oklch(63.1% 0.118 312.9)
-
Step 600
600
#8D5BA8
oklch(55.7% 0.127 312.8)
-
Step 700
700
#784A90
oklch(49.1% 0.119 313.1)
-
Step 800
800
#613D75
oklch(42.6% 0.098 312.5)
-
Step 900
900
#50355E
oklch(37.8% 0.075 313.4)
-
Step 950
950 (this color)
#1F1027
oklch(20.6% 0.048 312.9)
#1F1027 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) | #0B1528 | 0.040 |
| Deuteranopia (no green cones) | #0F1626 | 0.036 |
| Tritanopia (no blue cones) | #1E1319 | 0.033 |
| Achromatopsia (no color) | #161616 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1027
#1F1027
oklch(20.6% 0.048 312.9)
- #0E1C04
#0E1C04
oklch(20.6% 0.048 133.5)
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 #1F1027, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.046
- Very Dark Purple #2A0134 ΔE 0.051
- Midnight Purple #280137 ΔE 0.052
- Eggplant #380835 ΔE 0.065
- Dark #1B2431 ΔE 0.065
- Rich Navy #001219 ΔE 0.069
- Dark Purple #35063E ΔE 0.069
- Jet #212529 ΔE 0.072
Use #1F1027 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.