#318E68
Closest named color: Viridian (#1E9167). oklch(58.1% 0.106 162.6), rgb(49, 142, 104).
Aa
Black text reads best on this color (5.19:1).
About this color
#318E68 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.106 and its hue 163°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.013 away. Black text reads best on it, at 5.19:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.19:1 |
| White text | 4.03:1 |
Values
| HEX | #318E68 |
| RGB | rgb(49, 142, 104) |
| HSL | hsl(155, 49%, 37%) |
| OKLCH | oklch(58.1% 0.106 162.6) |
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 #318E68 | 4.03:1 | AA large text | Lc -72.8 | Content text, not long reading |
| Black text on #318E68 | 5.19:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #318E68 text on white | 4.03:1 | AA large text | Lc 67.3 | Content text, not long reading |
| #318E68 text on black | 5.19:1 | AA | Lc -34.3 | 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
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CADFD4
oklch(88.5% 0.027 163.1)
-
Step 300
300
#A6CBB8
oklch(81% 0.048 162.8)
-
Step 400
400
#74B093
oklch(70.8% 0.076 162.7)
-
Step 500
500
#4B9C78
oklch(63.1% 0.097 162.6)
-
Step 600
600 (this color)
#318E68
oklch(58.1% 0.106 162.6)
-
Step 700
700
#187250
oklch(49.2% 0.099 162.5)
-
Step 800
800
#185D42
oklch(42.8% 0.082 162.8)
-
Step 900
900
#1C4C37
oklch(37.7% 0.064 162)
-
Step 950
950
#122D21
oklch(27.2% 0.04 162.8)
#318E68 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) | #8C8466 | 0.103 |
| Deuteranopia (no green cones) | #7F7B6A | 0.098 |
| Tritanopia (no blue cones) | #008E84 | 0.042 |
| Achromatopsia (no color) | #7E7E7E | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #318E68
#318E68
oklch(58.1% 0.106 162.6)
- #A5608C
#A5608C
oklch(58.1% 0.106 342.1)
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 #318E68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.013
- Sea Green #2E8B57 ΔE 0.024
- Ocean Green #3D9973 ΔE 0.036
- Light Forest Green #4F9153 ΔE 0.038
- Dark Sage #598556 ΔE 0.039
- Fern Green #548D44 ΔE 0.049
- Slate Green #658D6D ΔE 0.050
- Dusty Teal #4C9085 ΔE 0.051
Use #318E68 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.