#100A18
Closest named color: Almost Black (#070D0D). oklch(16.1% 0.03 302.9), rgb(16, 10, 24).
Aa
White text reads best on this color (19.46:1).
About this color
#100A18 is a very dark, muted purple. In OKLCH its lightness is 16%, its chroma 0.030 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.035 away. White text reads best on it, at 19.46:1.
| Hue family | Purples |
| Lightness | very dark (16%) |
| Chroma | muted (0.030) |
| Temperature | in between |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.07:1 |
| White text | 19.46:1 |
Values
| HEX | #100A18 |
| RGB | rgb(16, 10, 24) |
| HSL | hsl(266, 41%, 7%) |
| OKLCH | oklch(16.1% 0.03 302.9) |
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 #100A18 | 19.46:1 | AAA | Lc -107.6 | Preferred for body text |
| Black text on #100A18 | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #100A18 text on white | 19.46:1 | AAA | Lc 105.7 | Preferred for body text |
| #100A18 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#EBE8F0
oklch(93.6% 0.011 303.1)
-
Step 200
200
#DBD6E4
oklch(88.4% 0.02 302.2)
-
Step 300
300
#C5BBD4
oklch(80.8% 0.036 303.7)
-
Step 400
400
#A798BE
oklch(70.6% 0.057 302.9)
-
Step 500
500
#927FAE
oklch(63.1% 0.072 302.9)
-
Step 600
600
#7D689A
oklch(55.7% 0.079 303.2)
-
Step 700
700
#695683
oklch(49% 0.074 303.2)
-
Step 800
800
#56476B
oklch(42.8% 0.061 303)
-
Step 900
900
#473B57
oklch(37.7% 0.049 303.8)
-
Step 950
950 (this color)
#100A18
oklch(16.1% 0.03 302.9)
#100A18 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) | #070D19 | 0.020 |
| Deuteranopia (no green cones) | #080D18 | 0.019 |
| Tritanopia (no blue cones) | #0F0C0F | 0.023 |
| Achromatopsia (no color) | #0D0D0D | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #100A18
#100A18
oklch(16.1% 0.03 302.9)
- #0B0F03
#0B0F03
oklch(15.9% 0.028 122.4)
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 #100A18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.035
- Rich Navy #001219 ΔE 0.040
- Very Dark Brown #1D0200 ΔE 0.063
- Rich Black #0D1B2A ΔE 0.064
- Midnight #03012D ΔE 0.067
- Dark Navy Blue #00022E ΔE 0.071
- Dark Navy #000435 ΔE 0.075
- Very Dark Blue #000133 ΔE 0.078
Use #100A18 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.