#091D1B
Closest named color: Rich Black (#0D1B2A). oklch(21.3% 0.026 186.8), rgb(9, 29, 27).
Aa
White text reads best on this color (17.45:1).
About this color
#091D1B is a very dark close to neutral grey. In OKLCH its lightness is 21%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.034 away. White text reads best on it, at 17.45:1.
| Hue family | Neutrals |
| Lightness | very dark (21%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.45:1 |
Values
| HEX | #091D1B |
| RGB | rgb(9, 29, 27) |
| HSL | hsl(174, 53%, 7%) |
| OKLCH | oklch(21.3% 0.026 186.8) |
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 #091D1B | 17.45:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #091D1B | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #091D1B text on white | 17.45:1 | AAA | Lc 104.2 | Preferred for body text |
| #091D1B text on black | 1.20:1 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CDDDDB
oklch(88.5% 0.017 187.8)
-
Step 300
300
#ABC8C4
oklch(81% 0.032 186.4)
-
Step 400
400
#7DABA6
oklch(70.7% 0.05 187.7)
-
Step 500
500
#5A9690
oklch(63% 0.063 187.6)
-
Step 600
600
#3D817A
oklch(55.7% 0.07 186.5)
-
Step 700
700
#2F6D67
oklch(49.2% 0.065 186.8)
-
Step 800
800
#285954
oklch(42.8% 0.054 186.6)
-
Step 900
900
#264945
oklch(37.8% 0.041 186.1)
-
Step 950
950 (this color)
#091D1B
oklch(21.3% 0.026 186.8)
#091D1B 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) | #1B1B1B | 0.028 |
| Deuteranopia (no green cones) | #18191B | 0.026 |
| Tritanopia (no blue cones) | #021E1C | 0.008 |
| Achromatopsia (no color) | #1A1A1A | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #091D1B
#091D1B
oklch(21.3% 0.026 186.8)
- #241417
#241417
oklch(21.4% 0.027 7.3)
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 #091D1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.034
- Rich Navy #001219 ΔE 0.048
- Jet #212529 ΔE 0.054
- Dark #1B2431 ΔE 0.054
- Almost Black #070D0D ΔE 0.063
- Oxford Blue #1B263B ΔE 0.071
- Dark Forest Green #002D04 ΔE 0.080
- Dark Brown #341C02 ΔE 0.082
Use #091D1B 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.