#37866C
Closest named color: Viridian (#1E9167). oklch(56.3% 0.088 168.6), rgb(55, 134, 108).
Aa
Black text reads best on this color (4.78:1).
About this color
#37866C is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.088 and its hue 169°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.038 away. Black text reads best on it, at 4.78:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.088) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 4.78:1 |
| White text | 4.38:1 |
Values
| HEX | #37866C |
| RGB | rgb(55, 134, 108) |
| HSL | hsl(160, 42%, 37%) |
| OKLCH | oklch(56.3% 0.088 168.6) |
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 #37866C | 4.38:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #37866C | 4.78:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #37866C text on white | 4.38:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #37866C text on black | 4.78:1 | AA | Lc -31.5 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE8
oklch(93.5% 0.011 167.8)
-
Step 200
200
#CCDED6
oklch(88.5% 0.022 167.4)
-
Step 300
300
#A9C9BC
oklch(80.9% 0.039 168.8)
-
Step 400
400
#79AE99
oklch(70.7% 0.064 167.9)
-
Step 500
500
#549981
oklch(63% 0.08 169.1)
-
Step 600
600 (this color)
#37866C
oklch(56.3% 0.088 168.6)
-
Step 700
700
#266F58
oklch(49% 0.081 168.7)
-
Step 800
800
#225B48
oklch(42.8% 0.068 168.1)
-
Step 900
900
#224B3C
oklch(37.8% 0.053 167.3)
-
Step 950
950
#152C23
oklch(27.1% 0.034 166.7)
#37866C 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) | #837D6B | 0.090 |
| Deuteranopia (no green cones) | #77756E | 0.086 |
| Tritanopia (no blue cones) | #09877F | 0.031 |
| Achromatopsia (no color) | #787878 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37866C
#37866C
oklch(56.3% 0.088 168.6)
- #9C5F7E
#9C5F7E
oklch(56.3% 0.089 348.5)
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 #37866C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.038
- Sea Green #2E8B57 ΔE 0.039
- Dark Sage #598556 ΔE 0.040
- Dark Cyan #008B8B ΔE 0.045
- Teal #008080 ΔE 0.046
- Dusty Teal #4C9085 ΔE 0.049
- Slate Green #658D6D ΔE 0.053
- Bluegreen #017A79 ΔE 0.055
Use #37866C 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.