#1F102A
Closest named color: Rich Black (#0D1B2A). oklch(20.8% 0.053 309.1), rgb(31, 16, 42).
Aa
White text reads best on this color (18.01:1).
About this color
#1F102A is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.053 and its hue 309°. 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 18.01:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.053) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.01:1 |
Values
| HEX | #1F102A |
| RGB | rgb(31, 16, 42) |
| HSL | hsl(275, 45%, 11%) |
| OKLCH | oklch(20.8% 0.053 309.1) |
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 #1F102A | 18.01:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #1F102A | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #1F102A text on white | 18.01:1 | AAA | Lc 104.6 | Preferred for body text |
| #1F102A 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F3
oklch(93.6% 0.017 308.3)
-
Step 200
200
#E0D3EB
oklch(88.5% 0.035 309.7)
-
Step 300
300
#CDB6E0
oklch(80.9% 0.063 309.6)
-
Step 400
400
#B38FD0
oklch(70.7% 0.1 309.3)
-
Step 500
500
#A072C4
oklch(63.1% 0.129 309)
-
Step 600
600
#8B59B0
oklch(55.6% 0.139 309.1)
-
Step 700
700
#764898
oklch(49% 0.131 308.9)
-
Step 800
800
#603C7B
oklch(42.7% 0.107 308.9)
-
Step 900
900
#4F3463
oklch(37.8% 0.084 309.4)
-
Step 950
950 (this color)
#1F102A
oklch(20.8% 0.053 309.1)
#1F102A 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) | #09162B | 0.043 |
| Deuteranopia (no green cones) | #0E1729 | 0.038 |
| Tritanopia (no blue cones) | #1E141B | 0.036 |
| Achromatopsia (no color) | #161616 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1F102A
#1F102A
oklch(20.8% 0.053 309.1)
- #101C01
#101C01
oklch(20.7% 0.052 129)
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 #1F102A, 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 0.047
- Midnight Purple #280137 ΔE 0.048
- Eggplant #380835 ΔE 0.062
- Dark #1B2431 ΔE 0.065
- Dark Purple #35063E ΔE 0.065
- Deep Purple #36013F ΔE 0.071
- Rich Navy #001219 ΔE 0.072
Use #1F102A 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.