#288B67
Closest named color: Viridian (#1E9167). oklch(57.1% 0.106 164.4), rgb(40, 139, 103).
Aa
Black text reads best on this color (4.97:1).
About this color
#288B67 is a medium-dark, moderately saturated green. In OKLCH its lightness is 57%, its chroma 0.106 and its hue 164°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.018 away. Black text reads best on it, at 4.97:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 4.97:1 |
| White text | 4.21:1 |
Values
| HEX | #288B67 |
| RGB | rgb(40, 139, 103) |
| HSL | hsl(158, 55%, 35%) |
| OKLCH | oklch(57.1% 0.106 164.4) |
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 #288B67 | 4.21:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #288B67 | 4.97:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #288B67 text on white | 4.21:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #288B67 text on black | 4.97:1 | AA | Lc -32.9 | 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
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CADFD5
oklch(88.5% 0.026 165.6)
-
Step 300
300
#A5CBB9
oklch(80.9% 0.048 164.8)
-
Step 400
400
#72B094
oklch(70.7% 0.077 164.2)
-
Step 500
500
#489C7A
oklch(63.1% 0.098 164.5)
-
Step 600
600 (this color)
#288B67
oklch(57.1% 0.106 164.4)
-
Step 700
700
#117252
oklch(49.1% 0.099 164.5)
-
Step 800
800
#145D43
oklch(42.8% 0.082 164.2)
-
Step 900
900
#1A4C39
oklch(37.7% 0.063 165)
-
Step 950
950
#112D21
oklch(27.1% 0.041 163.5)
#288B67 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) | #888165 | 0.104 |
| Deuteranopia (no green cones) | #7B7769 | 0.101 |
| Tritanopia (no blue cones) | #008B81 | 0.039 |
| Achromatopsia (no color) | #7B7B7B | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #288B67
#288B67
oklch(57.1% 0.106 164.4)
- #A35C87
#A35C87
oklch(57% 0.108 343.9)
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 #288B67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.018
- Sea Green #2E8B57 ΔE 0.022
- Dark Sage #598556 ΔE 0.041
- Light Forest Green #4F9153 ΔE 0.046
- Ocean Green #3D9973 ΔE 0.047
- Fern Green #548D44 ΔE 0.054
- Dark Cyan #008B8B ΔE 0.054
- Jungle Green #048243 ΔE 0.055
Use #288B67 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.