#428559
Closest named color: Dark Sage (#598556). oklch(56% 0.097 153.2), rgb(66, 133, 89).
Aa
Black text reads best on this color (4.73:1).
About this color
#428559 is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.097 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.023 away. Black text reads best on it, at 4.73:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.097) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.73:1 |
| White text | 4.43:1 |
Values
| HEX | #428559 |
| RGB | rgb(66, 133, 89) |
| HSL | hsl(141, 34%, 39%) |
| OKLCH | oklch(56% 0.097 153.2) |
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 #428559 | 4.43:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #428559 | 4.73:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #428559 text on white | 4.43:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #428559 text on black | 4.73:1 | AA | Lc -31.0 | 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
#F3F7F4
oklch(97.2% 0.006 153.8)
-
Step 100
100
#E4ECE6
oklch(93.5% 0.012 153.7)
-
Step 200
200
#CEDED2
oklch(88.5% 0.024 153.4)
-
Step 300
300
#ACC9B4
oklch(80.8% 0.043 153.9)
-
Step 400
400
#7FAE8C
oklch(70.8% 0.071 153)
-
Step 500
500
#5D9970
oklch(63% 0.088 153.4)
-
Step 600
600 (this color)
#428559
oklch(56% 0.097 153.2)
-
Step 700
700
#326F48
oklch(49% 0.09 153.5)
-
Step 800
800
#2A5B3B
oklch(42.7% 0.076 153.2)
-
Step 900
900
#274B33
oklch(37.8% 0.059 153.5)
-
Step 950
950
#182C1E
oklch(27.1% 0.037 152.9)
#428559 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) | #857C56 | 0.085 |
| Deuteranopia (no green cones) | #7B755C | 0.083 |
| Tritanopia (no blue cones) | #338379 | 0.050 |
| Achromatopsia (no color) | #787878 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428559
#428559
oklch(56% 0.097 153.2)
- #965E8D
#965E8D
oklch(56% 0.097 332.8)
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 #428559, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.023
- Sea Green #2E8B57 ΔE 0.023
- Viridian #1E9167 ΔE 0.037
- Light Forest Green #4F9153 ΔE 0.043
- Fern Green #548D44 ΔE 0.044
- Military Green #667C3E ΔE 0.046
- Jungle Green #048243 ΔE 0.049
- Swamp #698339 ΔE 0.050
Use #428559 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.