#100C18
Closest named color: Almost Black (#070D0D). oklch(16.6% 0.025 298.9), rgb(16, 12, 24).
Aa
White text reads best on this color (19.30:1).
About this color
#100C18 is a very dark close to neutral grey. In OKLCH its lightness is 17%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.032 away. White text reads best on it, at 19.30:1.
| Hue family | Neutrals |
| Lightness | very dark (17%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.08:1 |
| White text | 19.30:1 |
Values
| HEX | #100C18 |
| RGB | rgb(16, 12, 24) |
| HSL | hsl(260, 33%, 7%) |
| OKLCH | oklch(16.6% 0.025 298.9) |
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 #100C18 | 19.30:1 | AAA | Lc -107.5 | Preferred for body text |
| Black text on #100C18 | 1.08:1 | Fails | Lc 0.0 | Not readable |
| #100C18 text on white | 19.30:1 | AAA | Lc 105.6 | Preferred for body text |
| #100C18 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#EAE9EF
oklch(93.7% 0.008 293.9)
-
Step 200
200
#DAD7E3
oklch(88.5% 0.017 297.5)
-
Step 300
300
#C3BDD2
oklch(81% 0.03 298.8)
-
Step 400
400
#A49ABB
oklch(70.6% 0.049 299)
-
Step 500
500
#8E82AA
oklch(63.2% 0.061 298.4)
-
Step 600
600
#786B95
oklch(55.6% 0.066 298.4)
-
Step 700
700
#65597F
oklch(49.1% 0.061 298.6)
-
Step 800
800
#534968
oklch(42.8% 0.052 299)
-
Step 900
900
#443D54
oklch(37.7% 0.04 298.4)
-
Step 950
950 (this color)
#100C18
oklch(16.6% 0.025 298.9)
#100C18 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) | #090E18 | 0.015 |
| Deuteranopia (no green cones) | #0A0E18 | 0.013 |
| Tritanopia (no blue cones) | #0F0E10 | 0.021 |
| Achromatopsia (no color) | #0E0E0E | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100C18
#100C18
oklch(16.6% 0.025 298.9)
- #0D1004
#0D1004
oklch(16.5% 0.026 119.6)
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 #100C18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.032
- Rich Navy #001219 ΔE 0.036
- Rich Black #0D1B2A ΔE 0.058
- Very Dark Brown #1D0200 ΔE 0.063
- Midnight #03012D ΔE 0.071
- Dark Navy Blue #00022E ΔE 0.074
- Dark Navy #000435 ΔE 0.076
- Very Dark Blue #000133 ΔE 0.081
Use #100C18 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.