#428E6D
Closest named color: Viridian (#1E9167). oklch(58.9% 0.092 162.9), rgb(66, 142, 109).
Aa
Black text reads best on this color (5.32:1).
About this color
#428E6D is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.092 and its hue 163°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.026 away. Black text reads best on it, at 5.32:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.32:1 |
| White text | 3.94:1 |
Values
| HEX | #428E6D |
| RGB | rgb(66, 142, 109) |
| HSL | hsl(154, 37%, 41%) |
| OKLCH | oklch(58.9% 0.092 162.9) |
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 #428E6D | 3.94:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #428E6D | 5.32:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #428E6D text on white | 3.94:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #428E6D text on black | 5.32:1 | AA | Lc -35.0 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3ECE7
oklch(93.5% 0.012 162)
-
Step 200
200
#CCDED5
oklch(88.5% 0.023 164.5)
-
Step 300
300
#A9C9B9
oklch(80.8% 0.041 163.7)
-
Step 400
400
#7AAE95
oklch(70.7% 0.066 163.3)
-
Step 500
500
#569A7B
oklch(63.2% 0.085 163)
-
Step 600
600 (this color)
#428E6D
oklch(58.9% 0.092 162.9)
-
Step 700
700
#297052
oklch(49.2% 0.086 162.4)
-
Step 800
800
#245B44
oklch(42.7% 0.07 163.3)
-
Step 900
900
#234B39
oklch(37.8% 0.055 162.7)
-
Step 950
950
#152C21
oklch(27% 0.036 161.9)
#428E6D 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) | #8C856B | 0.090 |
| Deuteranopia (no green cones) | #817D6F | 0.087 |
| Tritanopia (no blue cones) | #278E85 | 0.037 |
| Achromatopsia (no color) | #808080 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428E6D
#428E6D
oklch(58.9% 0.092 162.9)
- #A3668B
#A3668B
oklch(58.8% 0.092 343.2)
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 #428E6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.026
- Ocean Green #3D9973 ΔE 0.031
- Slate Green #658D6D ΔE 0.035
- Dark Sage #598556 ΔE 0.036
- Sea Green #2E8B57 ΔE 0.037
- Dusty Teal #4C9085 ΔE 0.038
- Light Forest Green #4F9153 ΔE 0.040
- Blue Green #0F9B8E ΔE 0.051
Use #428E6D 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.