#428663
Closest named color: Dark Sage (#598556). oklch(56.5% 0.089 159.2), rgb(66, 134, 99).
Aa
Black text reads best on this color (4.82:1).
About this color
#428663 is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.089 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.026 away. Black text reads best on it, at 4.82:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.82:1 |
| White text | 4.35:1 |
Values
| HEX | #428663 |
| RGB | rgb(66, 134, 99) |
| HSL | hsl(149, 34%, 39%) |
| OKLCH | oklch(56.5% 0.089 159.2) |
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 #428663 | 4.35:1 | AA large text | Lc -75.5 | Fine for body text |
| Black text on #428663 | 4.82:1 | AA | Lc 34.1 | Non-text elements, placeholder text |
| #428663 text on white | 4.35:1 | AA large text | Lc 70.0 | Content text, not long reading |
| #428663 text on black | 4.82:1 | AA | Lc -31.7 | 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
#E4ECE7
oklch(93.6% 0.011 158.8)
-
Step 200
200
#CDDED4
oklch(88.5% 0.023 160.2)
-
Step 300
300
#ACC9B7
oklch(80.9% 0.04 158.1)
-
Step 400
400
#7EAD92
oklch(70.6% 0.064 159)
-
Step 500
500
#5B9978
oklch(63.1% 0.082 159.6)
-
Step 600
600 (this color)
#428663
oklch(56.5% 0.089 159.2)
-
Step 700
700
#306F50
oklch(49.1% 0.083 159.7)
-
Step 800
800
#295A41
oklch(42.6% 0.068 159.3)
-
Step 900
900
#264A37
oklch(37.6% 0.053 159.3)
-
Step 950
950
#172C20
oklch(27.1% 0.035 157.9)
#428663 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) | #857D61 | 0.084 |
| Deuteranopia (no green cones) | #7B7665 | 0.082 |
| Tritanopia (no blue cones) | #2E857C | 0.040 |
| Achromatopsia (no color) | #797979 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428663
#428663
oklch(56.5% 0.089 159.2)
- #996187
#996187
oklch(56.6% 0.089 339.6)
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 #428663, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.026
- Sea Green #2E8B57 ΔE 0.031
- Viridian #1E9167 ΔE 0.036
- Slate Green #658D6D ΔE 0.047
- Light Forest Green #4F9153 ΔE 0.047
- Fern Green #548D44 ΔE 0.053
- Military Green #667C3E ΔE 0.054
- Dusty Teal #4C9085 ΔE 0.054
Use #428663 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.