#101800
Closest named color: Almost Black (#070D0D). oklch(19.4% 0.048 124.3), rgb(16, 24, 0).
Aa
White text reads best on this color (18.21:1).
About this color
#101800 is a very dark, muted brown. In OKLCH its lightness is 19%, its chroma 0.048 and its hue 124°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Almost Black (#070D0D), ΔE 0.062 away. White text reads best on it, at 18.21:1.
| Hue family | Browns |
| Lightness | very dark (19%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.15:1 |
| White text | 18.21:1 |
Values
| HEX | #101800 |
| RGB | rgb(16, 24, 0) |
| HSL | hsl(80, 100%, 5%) |
| OKLCH | oklch(19.4% 0.048 124.3) |
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 #101800 | 18.21:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #101800 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #101800 text on white | 18.21:1 | AAA | Lc 104.8 | Preferred for body text |
| #101800 text on black | 1.15:1 | 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
#F4F6F1
oklch(97% 0.007 124.4)
-
Step 100
100
#E7ECE0
oklch(93.6% 0.017 125.3)
-
Step 200
200
#D4DDC7
oklch(88.5% 0.031 125.2)
-
Step 300
300
#B8C79F
oklch(80.8% 0.057 124.4)
-
Step 400
400
#94AB6A
oklch(70.8% 0.092 124.6)
-
Step 500
500
#7A9540
oklch(63% 0.117 124.4)
-
Step 600
600
#637F1A
oklch(55.5% 0.127 124.4)
-
Step 700
700
#526B0A
oklch(49% 0.118 124.5)
-
Step 800
800
#44570F
oklch(42.6% 0.097 123.8)
-
Step 900
900
#394816
oklch(37.7% 0.076 124.2)
-
Step 950
950 (this color)
#101800
oklch(19.4% 0.048 124.3)
#101800 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) | #1A1600 | 0.020 |
| Deuteranopia (no green cones) | #191501 | 0.021 |
| Tritanopia (no blue cones) | #111613 | 0.041 |
| Achromatopsia (no color) | #151515 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101800
#101800
oklch(19.4% 0.048 124.3)
- #1A0E26
#1A0E26
oklch(19.4% 0.049 305.4)
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 #101800, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.062
- Rich Navy #001219 ΔE 0.066
- Dark Forest Green #002D04 ΔE 0.076
- Dark Brown #341C02 ΔE 0.079
- Rich Black #0D1B2A ΔE 0.079
- Very Dark Green #062E03 ΔE 0.080
- Very Dark Brown #1D0200 ΔE 0.084
- Jet #212529 ΔE 0.087
Use #101800 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.