#091D17
Closest named color: Rich Black (#0D1B2A). oklch(21.2% 0.029 171.5), rgb(9, 29, 23).
Aa
White text reads best on this color (17.50:1).
About this color
#091D17 is a very dark close to neutral grey. In OKLCH its lightness is 21%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.042 away. White text reads best on it, at 17.50:1.
| Hue family | Neutrals |
| Lightness | very dark (21%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.19:1 |
| White text | 17.50:1 |
Values
| HEX | #091D17 |
| RGB | rgb(9, 29, 23) |
| HSL | hsl(162, 53%, 7%) |
| OKLCH | oklch(21.2% 0.029 171.5) |
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 #091D17 | 17.50:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #091D17 | 1.19:1 | Fails | Lc 0.0 | Not readable |
| #091D17 text on white | 17.50:1 | AAA | Lc 104.3 | Preferred for body text |
| #091D17 text on black | 1.19:1 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CDDDD7
oklch(88.4% 0.019 171.4)
-
Step 300
300
#ABC8BE
oklch(80.8% 0.034 172.6)
-
Step 400
400
#7EAC9C
oklch(70.7% 0.055 171.2)
-
Step 500
500
#5B9784
oklch(63% 0.069 171.8)
-
Step 600
600
#3F826E
oklch(55.7% 0.076 171.6)
-
Step 700
700
#306E5C
oklch(49.2% 0.071 171.7)
-
Step 800
800
#29594B
oklch(42.6% 0.058 172.1)
-
Step 900
900
#264A3F
oklch(37.8% 0.046 171.9)
-
Step 950
950 (this color)
#091D17
oklch(21.2% 0.029 171.5)
#091D17 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) | #1C1B17 | 0.030 |
| Deuteranopia (no green cones) | #191917 | 0.027 |
| Tritanopia (no blue cones) | #031D1B | 0.010 |
| Achromatopsia (no color) | #191919 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #091D17
#091D17
oklch(21.2% 0.029 171.5)
- #23131A
#23131A
oklch(21.2% 0.029 352)
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 #091D17, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.042
- Rich Navy #001219 ΔE 0.050
- Jet #212529 ΔE 0.058
- Dark #1B2431 ΔE 0.060
- Almost Black #070D0D ΔE 0.063
- Dark Forest Green #002D04 ΔE 0.075
- Oxford Blue #1B263B ΔE 0.077
- Very Dark Green #062E03 ΔE 0.079
Use #091D17 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.