#428351
Closest named color: Sea Green (#2E8B57). oklch(55.3% 0.102 149.5), rgb(66, 131, 81).
Aa
Black text reads best on this color (4.59:1).
About this color
#428351 is a medium-dark, moderately saturated green. In OKLCH its lightness is 55%, its chroma 0.102 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.025 away. Black text reads best on it, at 4.59:1.
| Hue family | Greens |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.102) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.59:1 |
| White text | 4.56:1 |
Values
| HEX | #428351 |
| RGB | rgb(66, 131, 81) |
| HSL | hsl(134, 33%, 39%) |
| OKLCH | oklch(55.3% 0.102 149.5) |
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 #428351 | 4.56:1 | AA | Lc -77.0 | Fine for body text |
| Black text on #428351 | 4.59:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #428351 text on white | 4.56:1 | AA | Lc 71.5 | Content text, not long reading |
| #428351 text on black | 4.59:1 | AA | Lc -30.1 | 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
#F3F7F3
oklch(97.2% 0.007 145.5)
-
Step 100
100
#E4ECE5
oklch(93.5% 0.013 149.2)
-
Step 200
200
#CEDED0
oklch(88.5% 0.026 149.1)
-
Step 300
300
#ADC9B1
oklch(80.8% 0.045 149.3)
-
Step 400
400
#80AE88
oklch(70.7% 0.074 149.5)
-
Step 500
500
#5E9A6A
oklch(63.2% 0.095 149.4)
-
Step 600
600 (this color)
#428351
oklch(55.3% 0.102 149.5)
-
Step 700
700
#347042
oklch(49.2% 0.096 149.3)
-
Step 800
800
#2C5B37
oklch(42.7% 0.079 149.6)
-
Step 900
900
#284B30
oklch(37.8% 0.062 150)
-
Step 950
950
#182C1C
oklch(27.1% 0.039 149.5)
#428351 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) | #84794E | 0.086 |
| Deuteranopia (no green cones) | #7B7354 | 0.084 |
| Tritanopia (no blue cones) | #368176 | 0.056 |
| Achromatopsia (no color) | #767676 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428351
#428351
oklch(55.3% 0.102 149.5)
- #945B8F
#945B8F
oklch(55.3% 0.103 330)
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 #428351, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.025
- Dark Sage #598556 ΔE 0.027
- Jungle Green #048243 ΔE 0.041
- Military Green #667C3E ΔE 0.042
- Fern Green #548D44 ΔE 0.043
- Viridian #1E9167 ΔE 0.043
- Light Forest Green #4F9153 ΔE 0.046
- Swamp #698339 ΔE 0.047
Use #428351 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.