#1F1121
Closest named color: Rich Black (#0D1B2A). oklch(20.5% 0.037 322.3), rgb(31, 17, 33).
Aa
White text reads best on this color (18.09:1).
About this color
#1F1121 is a very dark, muted purple. In OKLCH its lightness is 20%, its chroma 0.037 and its hue 322°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.044 away. White text reads best on it, at 18.09:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.09:1 |
Values
| HEX | #1F1121 |
| RGB | rgb(31, 17, 33) |
| HSL | hsl(293, 32%, 10%) |
| OKLCH | oklch(20.5% 0.037 322.3) |
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 #1F1121 | 18.09:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #1F1121 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #1F1121 text on white | 18.09:1 | AAA | Lc 104.8 | Preferred for body text |
| #1F1121 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
#F7F4F8
oklch(97.1% 0.006 317.8)
-
Step 100
100
#EEE7EF
oklch(93.6% 0.013 321.9)
-
Step 200
200
#E1D4E3
oklch(88.5% 0.025 321.7)
-
Step 300
300
#CFB8D2
oklch(81% 0.044 322.3)
-
Step 400
400
#B692BB
oklch(70.7% 0.071 322.3)
-
Step 500
500
#A377AA
oklch(63.1% 0.09 321.8)
-
Step 600
600
#8E5F95
oklch(55.6% 0.098 322.2)
-
Step 700
700
#794E7F
oklch(49.1% 0.092 322.5)
-
Step 800
800
#624067
oklch(42.6% 0.076 322.2)
-
Step 900
900
#503754
oklch(37.7% 0.058 321.8)
-
Step 950
950 (this color)
#1F1121
oklch(20.5% 0.037 322.3)
#1F1121 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) | #0F1522 | 0.033 |
| Deuteranopia (no green cones) | #131720 | 0.031 |
| Tritanopia (no blue cones) | #1F1317 | 0.023 |
| Achromatopsia (no color) | #161616 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F1121
#1F1121
oklch(20.5% 0.037 322.3)
- #0C1B0B
#0C1B0B
oklch(20.3% 0.037 142.7)
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 #1F1121, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.044
- Very Dark Purple #2A0134 ΔE 0.062
- Rich Navy #001219 ΔE 0.063
- Dark #1B2431 ΔE 0.064
- Midnight Purple #280137 ΔE 0.064
- Jet #212529 ΔE 0.068
- Almost Black #070D0D ΔE 0.068
- Eggplant #380835 ΔE 0.072
Use #1F1121 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.