#100B1F
Closest named color: Rich Navy (#001219). oklch(16.9% 0.041 293), rgb(16, 11, 31).
Aa
White text reads best on this color (19.27:1).
About this color
#100B1F is a very dark, muted purple. In OKLCH its lightness is 17%, its chroma 0.041 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.042 away. White text reads best on it, at 19.27:1.
| Hue family | Purples |
| Lightness | very dark (17%) |
| Chroma | muted (0.041) |
| Temperature | in between |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.08:1 |
| White text | 19.27:1 |
Values
| HEX | #100B1F |
| RGB | rgb(16, 11, 31) |
| HSL | hsl(255, 48%, 8%) |
| OKLCH | oklch(16.9% 0.041 293) |
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 #100B1F | 19.27:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #100B1F | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #100B1F text on white | 19.27:1 | AAA | Lc 105.5 | Preferred for body text |
| #100B1F 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
#EAE8F3
oklch(93.6% 0.015 294.5)
-
Step 200
200
#D9D6EA
oklch(88.4% 0.027 292.7)
-
Step 300
300
#C1BBDE
oklch(80.8% 0.049 293.1)
-
Step 400
400
#A298CD
oklch(70.7% 0.077 293)
-
Step 500
500
#8C7EC0
oklch(63.2% 0.098 293.1)
-
Step 600
600
#7666AC
oklch(55.5% 0.107 293.1)
-
Step 700
700
#635594
oklch(49.2% 0.099 292.6)
-
Step 800
800
#514578
oklch(42.6% 0.084 293.4)
-
Step 900
900
#433B61
oklch(37.8% 0.064 292.7)
-
Step 950
950 (this color)
#100B1F
oklch(16.9% 0.041 293)
#100B1F 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) | #050F20 | 0.024 |
| Deuteranopia (no green cones) | #050E1F | 0.023 |
| Tritanopia (no blue cones) | #0C0F13 | 0.034 |
| Achromatopsia (no color) | #0E0E0E | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100B1F
#100B1F
oklch(16.9% 0.041 293)
- #0F1100
#0F1100
oklch(17% 0.038 114.7)
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 #100B1F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.042
- Almost Black #070D0D ΔE 0.046
- Rich Black #0D1B2A ΔE 0.056
- Midnight #03012D ΔE 0.059
- Dark Navy Blue #00022E ΔE 0.063
- Dark Navy #000435 ΔE 0.064
- Very Dark Blue #000133 ΔE 0.069
- Very Dark Brown #1D0200 ΔE 0.076
Use #100B1F 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.