#100B1D
Closest named color: Rich Navy (#001219). oklch(16.7% 0.037 294.8), rgb(16, 11, 29).
Aa
White text reads best on this color (19.30:1).
About this color
#100B1D is a very dark, muted purple. In OKLCH its lightness is 17%, its chroma 0.037 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.041 away. White text reads best on it, at 19.30:1.
| Hue family | Purples |
| Lightness | very dark (17%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.08:1 |
| White text | 19.30:1 |
Values
| HEX | #100B1D |
| RGB | rgb(16, 11, 29) |
| HSL | hsl(257, 45%, 8%) |
| OKLCH | oklch(16.7% 0.037 294.8) |
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 #100B1D | 19.30:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #100B1D | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #100B1D text on white | 19.30:1 | AAA | Lc 105.6 | Preferred for body text |
| #100B1D 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#DAD6E8
oklch(88.5% 0.025 296.1)
-
Step 300
300
#C2BCDB
oklch(81% 0.044 294.3)
-
Step 400
400
#A398C8
oklch(70.6% 0.07 295.1)
-
Step 500
500
#8D7EBA
oklch(63% 0.09 295.2)
-
Step 600
600
#7767A7
oklch(55.6% 0.099 294.5)
-
Step 700
700
#64568F
oklch(49.2% 0.09 294.1)
-
Step 800
800
#524674
oklch(42.7% 0.076 295)
-
Step 900
900
#443B5E
oklch(37.7% 0.06 295.2)
-
Step 950
950 (this color)
#100B1D
oklch(16.7% 0.037 294.8)
#100B1D 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) | #060E1E | 0.021 |
| Deuteranopia (no green cones) | #070E1D | 0.019 |
| Tritanopia (no blue cones) | #0D0E12 | 0.029 |
| Achromatopsia (no color) | #0E0E0E | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100B1D
#100B1D
oklch(16.7% 0.037 294.8)
- #0E1000
#0E1000
oklch(16.5% 0.037 114.8)
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 #100B1D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.041
- Almost Black #070D0D ΔE 0.042
- Rich Black #0D1B2A ΔE 0.057
- Midnight #03012D ΔE 0.061
- Dark Navy Blue #00022E ΔE 0.065
- Dark Navy #000435 ΔE 0.067
- Very Dark Blue #000133 ΔE 0.072
- Very Dark Brown #1D0200 ΔE 0.072
Use #100B1D 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.