#1B102B
Closest named color: Rich Black (#0D1B2A). oklch(20.4% 0.053 300.6), rgb(27, 16, 43).
Aa
White text reads best on this color (18.17:1).
About this color
#1B102B is a very dark, muted purple. In OKLCH its lightness is 20%, its chroma 0.053 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.043 away. White text reads best on it, at 18.17:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | muted (0.053) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.17:1 |
Values
| HEX | #1B102B |
| RGB | rgb(27, 16, 43) |
| HSL | hsl(264, 46%, 12%) |
| OKLCH | oklch(20.4% 0.053 300.6) |
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 #1B102B | 18.17:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #1B102B | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #1B102B text on white | 18.17:1 | AAA | Lc 104.8 | Preferred for body text |
| #1B102B 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F5
oklch(93.6% 0.019 302.2)
-
Step 200
200
#DCD4ED
oklch(88.4% 0.035 300.3)
-
Step 300
300
#C7B8E4
oklch(80.9% 0.063 300.6)
-
Step 400
400
#AB92D6
oklch(70.7% 0.101 300.7)
-
Step 500
500
#9776CB
oklch(63.2% 0.128 300.7)
-
Step 600
600
#815DB8
oklch(55.6% 0.14 300.2)
-
Step 700
700
#6E4C9E
oklch(49.2% 0.13 300.9)
-
Step 800
800
#593F80
oklch(42.7% 0.107 300.4)
-
Step 900
900
#493667
oklch(37.7% 0.084 300.3)
-
Step 950
950 (this color)
#1B102B
oklch(20.4% 0.053 300.6)
#1B102B 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) | #07152C | 0.037 |
| Deuteranopia (no green cones) | #0A152A | 0.034 |
| Tritanopia (no blue cones) | #18151B | 0.041 |
| Achromatopsia (no color) | #161616 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B102B
#1B102B
oklch(20.4% 0.053 300.6)
- #141A00
#141A00
oklch(20.4% 0.049 120.6)
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 #1B102B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.043
- Midnight Purple #280137 ΔE 0.051
- Very Dark Purple #2A0134 ΔE 0.051
- Rich Navy #001219 ΔE 0.066
- Dark #1B2431 ΔE 0.066
- Navy Blue #001146 ΔE 0.069
- Eggplant #380835 ΔE 0.070
- Dark Purple #35063E ΔE 0.071
Use #1B102B 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.