#18190A
Closest named color: Rich Black (#0D1B2A). oklch(20.8% 0.027 111.8), rgb(24, 25, 10).
Aa
White text reads best on this color (17.76:1).
About this color
#18190A is a very dark close to neutral grey. In OKLCH its lightness is 21%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.060 away. White text reads best on it, at 17.76:1.
| Hue family | Neutrals |
| Lightness | very dark (21%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.18:1 |
| White text | 17.76:1 |
Values
| HEX | #18190A |
| RGB | rgb(24, 25, 10) |
| HSL | hsl(64, 43%, 7%) |
| OKLCH | oklch(20.8% 0.027 111.8) |
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 #18190A | 17.76:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #18190A | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #18190A text on white | 17.76:1 | AAA | Lc 104.5 | Preferred for body text |
| #18190A text on black | 1.18:1 | 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
#F5F6F2
oklch(97.1% 0.005 117.9)
-
Step 100
100
#EAEAE4
oklch(93.5% 0.008 106.6)
-
Step 200
200
#D9DACD
oklch(88.4% 0.018 110.3)
-
Step 300
300
#C1C3AC
oklch(80.9% 0.032 111.1)
-
Step 400
400
#A1A47F
oklch(70.6% 0.052 111.5)
-
Step 500
500
#8A8E5F
oklch(63.1% 0.066 112.2)
-
Step 600
600
#747845
oklch(55.7% 0.072 112.4)
-
Step 700
700
#626537
oklch(49.3% 0.067 111.8)
-
Step 800
800
#50522E
oklch(42.7% 0.054 111.2)
-
Step 900
900
#424429
oklch(37.7% 0.043 111.9)
-
Step 950
950 (this color)
#18190A
oklch(20.8% 0.027 111.8)
#18190A 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) | #1B1809 | 0.006 |
| Deuteranopia (no green cones) | #1B180B | 0.007 |
| Tritanopia (no blue cones) | #1A1715 | 0.024 |
| Achromatopsia (no color) | #181818 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18190A
#18190A
oklch(20.8% 0.027 111.8)
- #181523
#181523
oklch(20.6% 0.028 293.7)
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 #18190A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.060
- Dark Brown #341C02 ΔE 0.062
- Rich Navy #001219 ΔE 0.062
- Almost Black #070D0D ΔE 0.062
- Jet #212529 ΔE 0.065
- Dark #1B2431 ΔE 0.073
- Very Dark Brown #1D0200 ΔE 0.079
- Dark Forest Green #002D04 ΔE 0.080
Use #18190A 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.