#100B1B
Closest named color: Almost Black (#070D0D). oklch(16.5% 0.033 297), rgb(16, 11, 27).
Aa
White text reads best on this color (19.34:1).
About this color
#100B1B is a very dark, muted purple. In OKLCH its lightness is 17%, its chroma 0.033 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.039 away. White text reads best on it, at 19.34:1.
| Hue family | Purples |
| Lightness | very dark (17%) |
| Chroma | muted (0.033) |
| Temperature | in between |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.08:1 |
| White text | 19.34:1 |
Values
| HEX | #100B1B |
| RGB | rgb(16, 11, 27) |
| HSL | hsl(259, 42%, 7%) |
| OKLCH | oklch(16.5% 0.033 297) |
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 #100B1B | 19.34:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #100B1B | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #100B1B text on white | 19.34:1 | AAA | Lc 105.6 | Preferred for body text |
| #100B1B text on black | 1.08:1 | 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
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EAE8F1
oklch(93.5% 0.012 296.3)
-
Step 200
200
#DAD6E6
oklch(88.4% 0.022 297.4)
-
Step 300
300
#C3BCD8
oklch(81% 0.04 296.9)
-
Step 400
400
#A499C4
oklch(70.7% 0.063 296.5)
-
Step 500
500
#8E7FB5
oklch(63% 0.081 296.8)
-
Step 600
600
#7968A1
oklch(55.6% 0.088 297.2)
-
Step 700
700
#665689
oklch(49% 0.082 297.7)
-
Step 800
800
#534770
oklch(42.8% 0.068 296.9)
-
Step 900
900
#443C5A
oklch(37.7% 0.051 296.1)
-
Step 950
950 (this color)
#100B1B
oklch(16.5% 0.033 297)
#100B1B 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) | #070E1C | 0.019 |
| Deuteranopia (no green cones) | #080E1B | 0.018 |
| Tritanopia (no blue cones) | #0E0E11 | 0.027 |
| Achromatopsia (no color) | #0E0E0E | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100B1B
#100B1B
oklch(16.5% 0.033 297)
- #0D1001
#0D1001
oklch(16.4% 0.035 117.7)
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 #100B1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.039
- Rich Navy #001219 ΔE 0.039
- Rich Black #0D1B2A ΔE 0.059
- Midnight #03012D ΔE 0.064
- Dark Navy Blue #00022E ΔE 0.068
- Very Dark Brown #1D0200 ΔE 0.068
- Dark Navy #000435 ΔE 0.070
- Very Dark Blue #000133 ΔE 0.075
Use #100B1B 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.