#101D1C
Closest named color: Rich Black (#0D1B2A). oklch(21.8% 0.018 189.8), rgb(16, 29, 28).
Aa
White text reads best on this color (17.29:1).
About this color
#101D1C is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.031 away. White text reads best on it, at 17.29:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.29:1 |
Values
| HEX | #101D1C |
| RGB | rgb(16, 29, 28) |
| HSL | hsl(175, 29%, 9%) |
| OKLCH | oklch(21.8% 0.018 189.8) |
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 #101D1C | 17.29:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #101D1C | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #101D1C text on white | 17.29:1 | AAA | Lc 104.1 | Preferred for body text |
| #101D1C text on black | 1.21:1 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#D1DCDB
oklch(88.6% 0.012 190.4)
-
Step 300
300
#B2C5C3
oklch(80.8% 0.021 189.1)
-
Step 400
400
#89A8A5
oklch(70.7% 0.034 189.2)
-
Step 500
500
#6A928F
oklch(63% 0.044 190.3)
-
Step 600
600
#517D79
oklch(55.6% 0.049 188.6)
-
Step 700
700
#426966
oklch(49.1% 0.044 189.7)
-
Step 800
800
#365653
oklch(42.7% 0.038 188.4)
-
Step 900
900
#2F4745
oklch(37.8% 0.03 189.4)
-
Step 950
950 (this color)
#101D1C
oklch(21.8% 0.018 189.8)
#101D1C 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) | #1C1C1C | 0.020 |
| Deuteranopia (no green cones) | #191A1C | 0.018 |
| Tritanopia (no blue cones) | #0B1E1D | 0.007 |
| Achromatopsia (no color) | #1B1B1B | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101D1C
#101D1C
oklch(21.8% 0.018 189.8)
- #221718
#221718
oklch(21.9% 0.018 12.6)
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 #101D1C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.031
- Jet #212529 ΔE 0.046
- Dark #1B2431 ΔE 0.048
- Rich Navy #001219 ΔE 0.053
- Oxford Blue #1B263B ΔE 0.065
- Almost Black #070D0D ΔE 0.066
- Dark Brown #341C02 ΔE 0.075
- Dark Forest Green #002D04 ΔE 0.082
Use #101D1C 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.