#428B00
Closest named color: Forest Green (#228B22). oklch(56.7% 0.169 136), rgb(66, 139, 0).
Aa
Black text reads best on this color (4.92:1).
About this color
#428B00 is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.169 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.022 away. Black text reads best on it, at 4.92:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.169) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.92:1 |
| White text | 4.26:1 |
Values
| HEX | #428B00 |
| RGB | rgb(66, 139, 0) |
| HSL | hsl(92, 100%, 27%) |
| OKLCH | oklch(56.7% 0.169 136) |
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 #428B00 | 4.26:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #428B00 | 4.92:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #428B00 text on white | 4.26:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #428B00 text on black | 4.92:1 | AA | Lc -32.6 | 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
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E3EDDF
oklch(93.5% 0.021 136.6)
-
Step 200
200
#CDE0C5
oklch(88.5% 0.042 136.3)
-
Step 300
300
#ABCC9C
oklch(80.8% 0.075 136)
-
Step 400
400
#7DB263
oklch(70.7% 0.122 136)
-
Step 500
500
#5B9E34
oklch(63.2% 0.155 136)
-
Step 600
600 (this color)
#428B00
oklch(56.7% 0.169 136)
-
Step 700
700
#357200
oklch(49.1% 0.146 136)
-
Step 800
800
#2A5D00
oklch(42.6% 0.127 136)
-
Step 900
900
#264D0D
oklch(37.7% 0.101 136.1)
-
Step 950
950
#172D0A
oklch(26.9% 0.064 135.8)
#428B00 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) | #907E00 | 0.105 |
| Deuteranopia (no green cones) | #87781A | 0.104 |
| Tritanopia (no blue cones) | #3E8575 | 0.121 |
| Achromatopsia (no color) | #7A7A7A | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428B00
#428B00
oklch(56.7% 0.169 136)
- #9C50B8
#9C50B8
oklch(56.6% 0.17 316.1)
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 #428B00, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.022
- Emerald Green #028F1E ΔE 0.028
- Sap Green #5C8B15 ΔE 0.030
- Irish Green #019529 ΔE 0.035
- True Green #089404 ΔE 0.035
- Kelley Green #009337 ΔE 0.036
- Dark Grass Green #388004 ΔE 0.036
- Mossy Green #638B27 ΔE 0.043
Use #428B00 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.