#288D6A
Closest named color: Viridian (#1E9167). oklch(57.7% 0.107 165.4), rgb(40, 141, 106).
Aa
Black text reads best on this color (5.10:1).
About this color
#288D6A is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.107 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.015 away. Black text reads best on it, at 5.10:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.107) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.10:1 |
| White text | 4.11:1 |
Values
| HEX | #288D6A |
| RGB | rgb(40, 141, 106) |
| HSL | hsl(159, 56%, 35%) |
| OKLCH | oklch(57.7% 0.107 165.4) |
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 #288D6A | 4.11:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #288D6A | 5.10:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #288D6A text on white | 4.11:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #288D6A text on black | 5.10:1 | AA | Lc -33.8 | 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
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#CADFD5
oklch(88.5% 0.026 165.6)
-
Step 300
300
#A4CBB9
oklch(80.9% 0.049 165.4)
-
Step 400
400
#71B095
oklch(70.7% 0.077 165.4)
-
Step 500
500
#469C7B
oklch(63% 0.098 165.6)
-
Step 600
600 (this color)
#288D6A
oklch(57.7% 0.107 165.4)
-
Step 700
700
#0C7253
oklch(49.1% 0.099 165.5)
-
Step 800
800
#125D44
oklch(42.7% 0.082 165.4)
-
Step 900
900
#194C39
oklch(37.6% 0.064 165.3)
-
Step 950
950
#102D22
oklch(27.1% 0.041 166.1)
#288D6A 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) | #8A8368 | 0.105 |
| Deuteranopia (no green cones) | #7D796C | 0.102 |
| Tritanopia (no blue cones) | #008D83 | 0.038 |
| Achromatopsia (no color) | #7D7D7D | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288D6A
#288D6A
oklch(57.7% 0.107 165.4)
- #A65E87
#A65E87
oklch(57.7% 0.107 345.8)
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 #288D6A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.015
- Sea Green #2E8B57 ΔE 0.025
- Ocean Green #3D9973 ΔE 0.041
- Dark Sage #598556 ΔE 0.043
- Light Forest Green #4F9153 ΔE 0.044
- Dusty Teal #4C9085 ΔE 0.052
- Dark Cyan #008B8B ΔE 0.053
- Slate Green #658D6D ΔE 0.054
Use #288D6A 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.