#100B03
Closest named color: Almost Black (#070D0D). oklch(15.3% 0.021 84.3), rgb(16, 11, 3).
Aa
White text reads best on this color (19.60:1).
About this color
#100B03 is a very dark close to neutral grey. In OKLCH its lightness is 15%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.027 away. White text reads best on it, at 19.60:1.
| Hue family | Neutrals |
| Lightness | very dark (15%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.07:1 |
| White text | 19.60:1 |
Values
| HEX | #100B03 |
| RGB | rgb(16, 11, 3) |
| HSL | hsl(37, 68%, 4%) |
| OKLCH | oklch(15.3% 0.021 84.3) |
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 #100B03 | 19.60:1 | AAA | Lc -107.7 | Preferred for body text |
| Black text on #100B03 | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #100B03 text on white | 19.60:1 | AAA | Lc 105.7 | Preferred for body text |
| #100B03 text on black | 1.07:1 | 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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#ECE9E4
oklch(93.5% 0.007 80.7)
-
Step 200
200
#DDD9CF
oklch(88.6% 0.014 88.7)
-
Step 300
300
#C8C0AF
oklch(81% 0.025 85.8)
-
Step 400
400
#AC9F84
oklch(70.6% 0.041 85.3)
-
Step 500
500
#988766
oklch(63% 0.051 83.7)
-
Step 600
600
#83714D
oklch(55.6% 0.056 84.1)
-
Step 700
700
#6F5E3E
oklch(49% 0.052 82.7)
-
Step 800
800
#5A4D33
oklch(42.6% 0.043 84.1)
-
Step 900
900
#4A402D
oklch(37.6% 0.033 83.2)
-
Step 950
950 (this color)
#100B03
oklch(15.3% 0.021 84.3)
#100B03 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) | #0D0B03 | 0.007 |
| Deuteranopia (no green cones) | #0E0C03 | 0.006 |
| Tritanopia (no blue cones) | #120909 | 0.021 |
| Achromatopsia (no color) | #0C0C0C | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100B03
#100B03
oklch(15.3% 0.021 84.3)
- #070C15
#070C15
oklch(15.4% 0.021 260.7)
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 #100B03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.027
- Very Dark Brown #1D0200 ΔE 0.043
- Rich Navy #001219 ΔE 0.052
- Rich Black #0D1B2A ΔE 0.086
- Dark Brown #341C02 ΔE 0.106
- Midnight #03012D ΔE 0.110
- Dark Maroon #3C0008 ΔE 0.110
- Dark Navy Blue #00022E ΔE 0.112
Use #100B03 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.