#101F1E
Closest named color: Rich Black (#0D1B2A). oklch(22.5% 0.021 190.4), rgb(16, 31, 30).
Aa
White text reads best on this color (16.97:1).
About this color
#101F1E is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.032 away. White text reads best on it, at 16.97:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 16.97:1 |
Values
| HEX | #101F1E |
| RGB | rgb(16, 31, 30) |
| HSL | hsl(176, 32%, 9%) |
| OKLCH | oklch(22.5% 0.021 190.4) |
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 #101F1E | 16.97:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #101F1E | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #101F1E text on white | 16.97:1 | AAA | Lc 103.9 | Preferred for body text |
| #101F1E text on black | 1.23:1 | 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
#D0DCDB
oklch(88.5% 0.013 190.9)
-
Step 300
300
#B0C6C4
oklch(80.9% 0.024 190)
-
Step 400
400
#85A9A6
oklch(70.7% 0.04 190)
-
Step 500
500
#669490
oklch(63.2% 0.05 189.2)
-
Step 600
600
#4C7E7B
oklch(55.7% 0.054 190.8)
-
Step 700
700
#3C6A67
oklch(49% 0.051 190.3)
-
Step 800
800
#325754
oklch(42.8% 0.043 189.1)
-
Step 900
900
#2D4745
oklch(37.6% 0.032 189.8)
-
Step 950
950 (this color)
#101F1E
oklch(22.5% 0.021 190.4)
#101F1E 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) | #1D1E1E | 0.021 |
| Deuteranopia (no green cones) | #1B1B1E | 0.022 |
| Tritanopia (no blue cones) | #0A201F | 0.007 |
| Achromatopsia (no color) | #1C1C1C | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101F1E
#101F1E
oklch(22.5% 0.021 190.4)
- #251819
#251819
oklch(22.6% 0.021 13.8)
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 #101F1E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.032
- Jet #212529 ΔE 0.041
- Dark #1B2431 ΔE 0.043
- Rich Navy #001219 ΔE 0.059
- Oxford Blue #1B263B ΔE 0.060
- Almost Black #070D0D ΔE 0.074
- Dark Brown #341C02 ΔE 0.074
- Dark Forest Green #002D04 ΔE 0.078
Use #101F1E 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.