#428E5A
Closest named color: Light Forest Green (#4F9153). oklch(58.4% 0.11 151.9), rgb(66, 142, 90).
Aa
Black text reads best on this color (5.24:1).
About this color
#428E5A is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.110 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.018 away. Black text reads best on it, at 5.24:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.24:1 |
| White text | 4.00:1 |
Values
| HEX | #428E5A |
| RGB | rgb(66, 142, 90) |
| HSL | hsl(139, 37%, 41%) |
| OKLCH | oklch(58.4% 0.11 151.9) |
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 #428E5A | 4.00:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #428E5A | 5.24:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #428E5A text on white | 4.00:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #428E5A text on black | 5.24:1 | AA | Lc -34.6 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE5
oklch(93.6% 0.015 151.8)
-
Step 200
200
#CCDFD0
oklch(88.5% 0.029 151.9)
-
Step 300
300
#AACAB1
oklch(80.8% 0.049 151.7)
-
Step 400
400
#7BAF88
oklch(70.7% 0.079 151.8)
-
Step 500
500
#579B6A
oklch(63.1% 0.102 151.6)
-
Step 600
600 (this color)
#428E5A
oklch(58.4% 0.11 151.9)
-
Step 700
700
#2A7142
oklch(49.1% 0.103 151.7)
-
Step 800
800
#255C37
oklch(42.7% 0.085 151.9)
-
Step 900
900
#244C30
oklch(37.9% 0.066 151.8)
-
Step 950
950
#162C1C
oklch(26.9% 0.041 151.6)
#428E5A 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) | #8E8457 | 0.094 |
| Deuteranopia (no green cones) | #847C5D | 0.093 |
| Tritanopia (no blue cones) | #308C81 | 0.059 |
| Achromatopsia (no color) | #7F7F7F | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428E5A
#428E5A
oklch(58.4% 0.11 151.9)
- #A16299
#A16299
oklch(58.5% 0.11 331.6)
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 #428E5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.018
- Sea Green #2E8B57 ΔE 0.019
- Viridian #1E9167 ΔE 0.023
- Fern Green #548D44 ΔE 0.028
- Dark Sage #598556 ΔE 0.031
- Ocean Green #3D9973 ΔE 0.039
- Moss Green #658B38 ΔE 0.045
- Slate Green #658D6D ΔE 0.049
Use #428E5A 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.