#03180B
Closest named color: Rich Navy (#001219). oklch(18.6% 0.039 155), rgb(3, 24, 11).
Aa
White text reads best on this color (18.43:1).
About this color
#03180B is a very dark, muted green. In OKLCH its lightness is 19%, its chroma 0.039 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.044 away. White text reads best on it, at 18.43:1.
| Hue family | Greens |
| Lightness | very dark (19%) |
| Chroma | muted (0.039) |
| Temperature | in between |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.13:1 |
| White text | 18.43:1 |
Values
| HEX | #03180B |
| RGB | rgb(3, 24, 11) |
| HSL | hsl(143, 78%, 5%) |
| OKLCH | oklch(18.6% 0.039 155) |
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 #03180B | 18.43:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #03180B | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #03180B text on white | 18.43:1 | AAA | Lc 104.9 | Preferred for body text |
| #03180B text on black | 1.13:1 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3EDE6
oklch(93.7% 0.014 155.6)
-
Step 200
200
#CCDED2
oklch(88.4% 0.025 156.7)
-
Step 300
300
#AACAB4
oklch(80.9% 0.046 155.2)
-
Step 400
400
#7BAF8C
oklch(70.8% 0.075 154.6)
-
Step 500
500
#579B70
oklch(63.2% 0.096 154.8)
-
Step 600
600
#398558
oklch(55.6% 0.103 155)
-
Step 700
700
#2A7048
oklch(49% 0.096 155.2)
-
Step 800
800
#255C3B
oklch(42.8% 0.08 154.6)
-
Step 900
900
#244B33
oklch(37.7% 0.061 155.1)
-
Step 950
950 (this color)
#03180B
oklch(18.6% 0.039 155)
#03180B 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) | #18150A | 0.035 |
| Deuteranopia (no green cones) | #15130C | 0.035 |
| Tritanopia (no blue cones) | #001815 | 0.019 |
| Achromatopsia (no color) | #141414 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03180B
#03180B
oklch(18.6% 0.039 155)
- #1D0C1A
#1D0C1A
oklch(18.6% 0.038 333.8)
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 #03180B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.044
- Almost Black #070D0D ΔE 0.047
- Rich Black #0D1B2A ΔE 0.064
- Dark Forest Green #002D04 ΔE 0.085
- Jet #212529 ΔE 0.086
- Very Dark Brown #1D0200 ΔE 0.089
- Dark #1B2431 ΔE 0.089
- Very Dark Green #062E03 ΔE 0.089
Use #03180B 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.