#09191C
Closest named color: Rich Black (#0D1B2A). oklch(20.1% 0.022 211), rgb(9, 25, 28).
Aa
White text reads best on this color (17.98:1).
About this color
#09191C is a very dark close to neutral grey. In OKLCH its lightness is 20%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.029 away. White text reads best on it, at 17.98:1.
| Hue family | Neutrals |
| Lightness | very dark (20%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 17.98:1 |
Values
| HEX | #09191C |
| RGB | rgb(9, 25, 28) |
| HSL | hsl(189, 51%, 7%) |
| OKLCH | oklch(20.1% 0.022 211) |
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 #09191C | 17.98:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #09191C | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #09191C text on white | 17.98:1 | AAA | Lc 104.7 | Preferred for body text |
| #09191C text on black | 1.16:1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CFDCDF
oklch(88.6% 0.015 213.1)
-
Step 300
300
#AEC6CA
oklch(81% 0.027 208.7)
-
Step 400
400
#82A8B0
oklch(70.6% 0.043 212)
-
Step 500
500
#62939C
oklch(63.2% 0.054 210.3)
-
Step 600
600
#477D87
oklch(55.6% 0.059 210.8)
-
Step 700
700
#386972
oklch(49% 0.055 210.8)
-
Step 800
800
#2F565D
oklch(42.7% 0.046 210.3)
-
Step 900
900
#2A474C
oklch(37.7% 0.036 209.6)
-
Step 950
950 (this color)
#09191C
oklch(20.1% 0.022 211)
#09191C 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) | #16181C | 0.020 |
| Deuteranopia (no green cones) | #13161C | 0.018 |
| Tritanopia (no blue cones) | #021A1A | 0.012 |
| Achromatopsia (no color) | #171717 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #09191C
#09191C
oklch(20.1% 0.022 211)
- #1F1210
#1F1210
oklch(19.9% 0.022 28.9)
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 #09191C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.029
- Rich Navy #001219 ΔE 0.033
- Almost Black #070D0D ΔE 0.050
- Dark #1B2431 ΔE 0.061
- Jet #212529 ΔE 0.063
- Oxford Blue #1B263B ΔE 0.076
- Navy Blue #001146 ΔE 0.090
- Dark Brown #341C02 ΔE 0.091
Use #09191C 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.