#18551B
Closest named color: Forest (#0B5509). oklch(39.7% 0.109 143.9), rgb(24, 85, 27).
Aa
White text reads best on this color (8.92:1).
About this color
#18551B is a dark, moderately saturated green. In OKLCH its lightness is 40%, its chroma 0.109 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest (#0B5509), ΔE 0.017 away. White text reads best on it, at 8.92:1.
| Hue family | Greens |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Forest (#0B5509) |
| Black text | 2.35:1 |
| White text | 8.92:1 |
Values
| HEX | #18551B |
| RGB | rgb(24, 85, 27) |
| HSL | hsl(123, 56%, 21%) |
| OKLCH | oklch(39.7% 0.109 143.9) |
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 #18551B | 8.92:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #18551B | 2.35:1 | Fails | Lc 13.9 | Not readable |
| #18551B text on white | 8.92:1 | AAA | Lc 90.1 | Preferred for body text |
| #18551B text on black | 2.35:1 | Fails | Lc -12.2 | 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 900.
-
Step 50
50
#F1F7F1
oklch(97% 0.01 145.5)
-
Step 100
100
#E1EEE0
oklch(93.6% 0.023 143.4)
-
Step 200
200
#C8E1C7
oklch(88.4% 0.044 144.2)
-
Step 300
300
#A1CF9F
oklch(80.9% 0.082 143.7)
-
Step 400
400
#6BB56A
oklch(70.6% 0.13 143.8)
-
Step 500
500
#3BA23F
oklch(63.1% 0.167 143.9)
-
Step 600
600
#008C19
oklch(55.6% 0.181 143.9)
-
Step 700
700
#007614
oklch(49.1% 0.16 143.9)
-
Step 800
800
#00610E
oklch(42.8% 0.139 143.9)
-
Step 900
900 (this color)
#18551B
oklch(39.7% 0.109 143.9)
-
Step 950
950
#0D2F0E
oklch(27.1% 0.069 143.8)
#18551B 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) | #574D14 | 0.080 |
| Deuteranopia (no green cones) | #4F4820 | 0.079 |
| Tritanopia (no blue cones) | #085349 | 0.068 |
| Achromatopsia (no color) | #4A4A4A | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18551B
#18551B
oklch(39.7% 0.109 143.9)
- #622F67
#622F67
oklch(39.6% 0.108 323.9)
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 #18551B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest #0B5509 ΔE 0.017
- Deep Green #02590F ΔE 0.021
- Navy Green #35530A ΔE 0.027
- Spruce #0A5F38 ΔE 0.040
- Bottle Green #044A05 ΔE 0.042
- Pine #2B5D34 ΔE 0.043
- Darkgreen #054907 ΔE 0.044
- British Racing Green #05480D ΔE 0.047
Use #18551B 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.