#128B67
Closest named color: Viridian (#1E9167). oklch(56.7% 0.113 166.1), rgb(18, 139, 103).
Aa
Black text reads best on this color (4.91:1).
About this color
#128B67 is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.113 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.020 away. Black text reads best on it, at 4.91:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.113) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #128B67 |
| RGB | rgb(18, 139, 103) |
| HSL | hsl(162, 77%, 31%) |
| OKLCH | oklch(56.7% 0.113 166.1) |
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 #128B67 | 4.27:1 | AA large text | Lc -74.5 | Content text, not long reading |
| Black text on #128B67 | 4.91:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #128B67 text on white | 4.27:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #128B67 text on black | 4.91:1 | AA | Lc -32.6 | 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
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E1EDE8
oklch(93.6% 0.014 169.2)
-
Step 200
200
#C9DFD5
oklch(88.4% 0.027 166.7)
-
Step 300
300
#A2CCB9
oklch(81% 0.052 165.8)
-
Step 400
400
#6DB195
oklch(70.7% 0.081 166.1)
-
Step 500
500
#3E9D7B
oklch(63% 0.104 166.4)
-
Step 600
600 (this color)
#128B67
oklch(56.7% 0.113 166.1)
-
Step 700
700
#007253
oklch(49% 0.101 166.2)
-
Step 800
800
#035E44
oklch(42.8% 0.088 166.1)
-
Step 900
900
#134D39
oklch(37.7% 0.069 165.8)
-
Step 950
950
#0E2D22
oklch(27% 0.042 167)
#128B67 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) | #888065 | 0.113 |
| Deuteranopia (no green cones) | #7A7669 | 0.109 |
| Tritanopia (no blue cones) | #008B81 | 0.039 |
| Achromatopsia (no color) | #7A7A7A | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #128B67
#128B67
oklch(56.7% 0.113 166.1)
- #A55984
#A55984
oklch(56.7% 0.113 346.3)
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 #128B67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.020
- Sea Green #2E8B57 ΔE 0.023
- Dark Sage #598556 ΔE 0.049
- Light Forest Green #4F9153 ΔE 0.051
- Jungle Green #048243 ΔE 0.051
- Ocean Green #3D9973 ΔE 0.051
- Dark Cyan #008B8B ΔE 0.055
- Fern Green #548D44 ΔE 0.059
Use #128B67 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.