#1B9437
Closest named color: Kelley Green (#009337). oklch(58.4% 0.166 146.3), rgb(27, 148, 55).
Aa
Black text reads best on this color (5.33:1).
About this color
#1B9437 is a medium-dark, vivid green. In OKLCH its lightness is 58%, its chroma 0.166 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.007 away. Black text reads best on it, at 5.33:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.166) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #1B9437 |
| RGB | rgb(27, 148, 55) |
| HSL | hsl(134, 69%, 34%) |
| OKLCH | oklch(58.4% 0.166 146.3) |
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 #1B9437 | 3.93:1 | AA large text | Lc -71.7 | Content text, not long reading |
| Black text on #1B9437 | 5.33:1 | AA | Lc 37.9 | Non-text elements, placeholder text |
| #1B9437 text on white | 3.93:1 | AA large text | Lc 66.2 | Content text, not long reading |
| #1B9437 text on black | 5.33:1 | AA | Lc -35.5 | 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
#E1EEE1
oklch(93.6% 0.022 145.4)
-
Step 200
200
#C8E1C9
oklch(88.5% 0.042 146.3)
-
Step 300
300
#A2CEA4
oklch(80.9% 0.075 146)
-
Step 400
400
#6CB573
oklch(70.8% 0.12 146.4)
-
Step 500
500
#3DA14D
oklch(63.1% 0.153 146.4)
-
Step 600
600 (this color)
#1B9437
oklch(58.4% 0.166 146.3)
-
Step 700
700
#007524
oklch(49% 0.148 146.3)
-
Step 800
800
#02601D
oklch(42.6% 0.128 146.3)
-
Step 900
900
#134F1E
oklch(37.7% 0.1 146.3)
-
Step 950
950
#0E2E12
oklch(26.9% 0.063 145.9)
#1B9437 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) | #96862D | 0.127 |
| Deuteranopia (no green cones) | #897D3F | 0.126 |
| Tritanopia (no blue cones) | #009080 | 0.101 |
| Achromatopsia (no color) | #808080 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B9437
#1B9437
oklch(58.4% 0.166 146.3)
- #AC52AF
#AC52AF
oklch(58.4% 0.166 326.2)
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 #1B9437, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.007
- Irish Green #019529 ΔE 0.016
- Emerald Green #028F1E ΔE 0.025
- Forest Green #228B22 ΔE 0.028
- True Green #089404 ΔE 0.031
- Grass Green #3F9B0B ΔE 0.040
- Grassy Green #419C03 ΔE 0.044
- Sap Green #5C8B15 ΔE 0.048
Use #1B9437 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.