#428F5A
Closest named color: Light Forest Green (#4F9153). oklch(58.7% 0.112 151.7), rgb(66, 143, 90).
Aa
Black text reads best on this color (5.30:1).
About this color
#428F5A is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.112 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 0.016 away. Black text reads best on it, at 5.30:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.112) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #428F5A |
| RGB | rgb(66, 143, 90) |
| HSL | hsl(139, 37%, 41%) |
| OKLCH | oklch(58.7% 0.112 151.7) |
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 #428F5A | 3.95:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #428F5A | 5.30:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #428F5A text on white | 3.95:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #428F5A text on black | 5.30:1 | 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
#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
#569B6A
oklch(63% 0.102 151.9)
-
Step 600
600 (this color)
#428F5A
oklch(58.7% 0.112 151.7)
-
Step 700
700
#2A7142
oklch(49.1% 0.103 151.7)
-
Step 800
800
#245C36
oklch(42.6% 0.086 151.5)
-
Step 900
900
#234C2F
oklch(37.8% 0.068 151.4)
-
Step 950
950
#152C1C
oklch(26.9% 0.042 152.5)
#428F5A 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) | #8F8456 | 0.095 |
| Deuteranopia (no green cones) | #857D5D | 0.094 |
| Tritanopia (no blue cones) | #308D81 | 0.059 |
| Achromatopsia (no color) | #808080 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428F5A
#428F5A
oklch(58.7% 0.112 151.7)
- #A2629A
#A2629A
oklch(58.6% 0.112 331.5)
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 #428F5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.016
- Sea Green #2E8B57 ΔE 0.021
- Viridian #1E9167 ΔE 0.023
- Fern Green #548D44 ΔE 0.027
- Dark Sage #598556 ΔE 0.034
- Ocean Green #3D9973 ΔE 0.038
- Moss Green #658B38 ΔE 0.044
- Slate Green #658D6D ΔE 0.049
Use #428F5A 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.