#438F66
Closest named color: Viridian (#1E9167). oklch(59% 0.099 157.7), rgb(67, 143, 102).
Aa
Black text reads best on this color (5.35:1).
About this color
#438F66 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.099 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.022 away. Black text reads best on it, at 5.35:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.35:1 |
| White text | 3.91:1 |
Values
| HEX | #438F66 |
| RGB | rgb(67, 143, 102) |
| HSL | hsl(148, 36%, 41%) |
| OKLCH | oklch(59% 0.099 157.7) |
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 #438F66 | 3.91:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #438F66 | 5.35:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #438F66 text on white | 3.91:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #438F66 text on black | 5.35:1 | AA | Lc -35.3 | 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
#E3EDE6
oklch(93.7% 0.014 155.6)
-
Step 200
200
#CCDED3
oklch(88.4% 0.024 159.1)
-
Step 300
300
#AACAB6
oklch(81% 0.044 157.8)
-
Step 400
400
#7BAF8F
oklch(70.8% 0.072 157)
-
Step 500
500
#569A74
oklch(63% 0.091 157.9)
-
Step 600
600 (this color)
#438F66
oklch(59% 0.099 157.7)
-
Step 700
700
#2A704C
oklch(49.1% 0.092 157.8)
-
Step 800
800
#245B3E
oklch(42.6% 0.076 157.7)
-
Step 900
900
#234B35
oklch(37.7% 0.06 157.7)
-
Step 950
950
#152C1F
oklch(27% 0.038 157.7)
#438F66 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) | #8E8564 | 0.092 |
| Deuteranopia (no green cones) | #837D69 | 0.090 |
| Tritanopia (no blue cones) | #2C8E84 | 0.046 |
| Achromatopsia (no color) | #818181 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #438F66
#438F66
oklch(59% 0.099 157.7)
- #A36592
#A36592
oklch(58.9% 0.1 337.6)
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 #438F66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.022
- Light Forest Green #4F9153 ΔE 0.029
- Ocean Green #3D9973 ΔE 0.029
- Sea Green #2E8B57 ΔE 0.029
- Dark Sage #598556 ΔE 0.033
- Slate Green #658D6D ΔE 0.038
- Fern Green #548D44 ΔE 0.042
- Dusty Teal #4C9085 ΔE 0.048
Use #438F66 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.