#01891B
Closest named color: Forest Green (#228B22). oklch(54.7% 0.177 144.1), rgb(1, 137, 27).
Aa
Black text reads best on this color (4.59:1).
About this color
#01891B is a medium-dark, vivid green. In OKLCH its lightness is 55%, its chroma 0.177 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.014 away. Black text reads best on it, at 4.59:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.177) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.59:1 |
| White text | 4.56:1 |
Values
| HEX | #01891B |
| RGB | rgb(1, 137, 27) |
| HSL | hsl(131, 99%, 27%) |
| OKLCH | oklch(54.7% 0.177 144.1) |
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 #01891B | 4.56:1 | AA | Lc -76.5 | Fine for body text |
| Black text on #01891B | 4.59:1 | AA | Lc 33.1 | Non-text elements, placeholder text |
| #01891B text on white | 4.56:1 | AA | Lc 71.0 | Content text, not long reading |
| #01891B text on black | 4.59:1 | AA | Lc -30.7 | Non-text elements, placeholder text |
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 600.
-
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
#A2CFA0
oklch(81% 0.081 143.7)
-
Step 400
400
#6CB56C
oklch(70.7% 0.127 144.1)
-
Step 500
500
#3EA243
oklch(63.2% 0.163 144.2)
-
Step 600
600 (this color)
#01891B
oklch(54.7% 0.177 144.1)
-
Step 700
700
#007615
oklch(49.1% 0.159 144)
-
Step 800
800
#046112
oklch(42.8% 0.136 144.1)
-
Step 900
900
#134F17
oklch(37.6% 0.106 144)
-
Step 950
950
#0E2F0F
oklch(27.2% 0.068 143.9)
#01891B 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) | #8C7B00 | 0.128 |
| Deuteranopia (no green cones) | #7F7228 | 0.128 |
| Tritanopia (no blue cones) | #008575 | 0.113 |
| Achromatopsia (no color) | #767676 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01891B
#01891B
oklch(54.7% 0.177 144.1)
- #A043A9
#A043A9
oklch(54.6% 0.177 324.1)
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 #01891B, closest first.
No curated palette has a color within ΔE 0.04 of #01891B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.014
- Emerald Green #028F1E ΔE 0.018
- Green #008000 ΔE 0.028
- Dark Grass Green #388004 ΔE 0.030
- Kelley Green #009337 ΔE 0.034
- Tree Green #2A7E19 ΔE 0.034
- Irish Green #019529 ΔE 0.036
- True Green #089404 ΔE 0.036
Use #01891B 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.