#1B2011
Closest named color: Jet (#212529). oklch(23.4% 0.028 123.6), rgb(27, 32, 17).
Aa
White text reads best on this color (16.64:1).
About this color
#1B2011 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.045 away. White text reads best on it, at 16.64:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.26:1 |
| White text | 16.64:1 |
Values
| HEX | #1B2011 |
| RGB | rgb(27, 32, 17) |
| HSL | hsl(80, 31%, 10%) |
| OKLCH | oklch(23.4% 0.028 123.6) |
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 #1B2011 | 16.64:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #1B2011 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #1B2011 text on white | 16.64:1 | AAA | Lc 103.6 | Preferred for body text |
| #1B2011 text on black | 1.26:1 | 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E8EBE4
oklch(93.6% 0.01 125.7)
-
Step 200
200
#D6DBCE
oklch(88.4% 0.018 124)
-
Step 300
300
#BCC5AD
oklch(81% 0.034 123.9)
-
Step 400
400
#9AA782
oklch(70.8% 0.054 123.5)
-
Step 500
500
#819163
oklch(63.2% 0.068 123.9)
-
Step 600
600
#6B7B49
oklch(55.7% 0.074 123.3)
-
Step 700
700
#59673A
oklch(49% 0.069 123)
-
Step 800
800
#495431
oklch(42.7% 0.056 123)
-
Step 900
900
#3D462B
oklch(37.8% 0.045 123.5)
-
Step 950
950 (this color)
#1B2011
oklch(23.4% 0.028 123.6)
#1B2011 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) | #221E10 | 0.014 |
| Deuteranopia (no green cones) | #211E12 | 0.013 |
| Tritanopia (no blue cones) | #1C1F1C | 0.022 |
| Achromatopsia (no color) | #1E1E1E | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B2011
#1B2011
oklch(23.4% 0.028 123.6)
- #201A29
#201A29
oklch(23.2% 0.03 302.5)
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 #1B2011, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.045
- Dark Brown #341C02 ΔE 0.051
- Dark #1B2431 ΔE 0.057
- Rich Black #0D1B2A ΔE 0.059
- Dark Forest Green #002D04 ΔE 0.063
- Very Dark Green #062E03 ΔE 0.064
- Oxford Blue #1B263B ΔE 0.075
- Chocolate Brown #411900 ΔE 0.079
Use #1B2011 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.