#428C67
Closest named color: Viridian (#1E9167). oklch(58.2% 0.094 159.6), rgb(66, 140, 103).
Aa
Black text reads best on this color (5.17:1).
About this color
#428C67 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.094 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.024 away. Black text reads best on it, at 5.17:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.17:1 |
| White text | 4.05:1 |
Values
| HEX | #428C67 |
| RGB | rgb(66, 140, 103) |
| HSL | hsl(150, 36%, 40%) |
| OKLCH | oklch(58.2% 0.094 159.6) |
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 #428C67 | 4.05:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #428C67 | 5.17:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #428C67 text on white | 4.05:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #428C67 text on black | 5.17:1 | AA | Lc -34.1 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3ECE7
oklch(93.5% 0.012 162)
-
Step 200
200
#CDDED4
oklch(88.5% 0.023 160.2)
-
Step 300
300
#AAC9B7
oklch(80.8% 0.042 159.9)
-
Step 400
400
#7BAE92
oklch(70.7% 0.068 160)
-
Step 500
500
#579A77
oklch(63.2% 0.087 159.7)
-
Step 600
600 (this color)
#428C67
oklch(58.2% 0.094 159.6)
-
Step 700
700
#2B704F
oklch(49.2% 0.088 159.7)
-
Step 800
800
#255B41
oklch(42.7% 0.073 160)
-
Step 900
900
#244B37
oklch(37.8% 0.057 159.6)
-
Step 950
950
#162C20
oklch(27% 0.036 158.9)
#428C67 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) | #8B8365 | 0.090 |
| Deuteranopia (no green cones) | #807B69 | 0.087 |
| Tritanopia (no blue cones) | #2B8B82 | 0.042 |
| Achromatopsia (no color) | #7E7E7E | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #428C67
#428C67
oklch(58.2% 0.094 159.6)
- #A0648D
#A0648D
oklch(58.2% 0.095 339.5)
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 #428C67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.024
- Sea Green #2E8B57 ΔE 0.029
- Dark Sage #598556 ΔE 0.029
- Light Forest Green #4F9153 ΔE 0.036
- Ocean Green #3D9973 ΔE 0.037
- Slate Green #658D6D ΔE 0.039
- Dusty Teal #4C9085 ΔE 0.046
- Fern Green #548D44 ΔE 0.047
Use #428C67 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.