#377F52
Closest named color: Sea Green (#2E8B57). oklch(53.8% 0.101 153.7), rgb(55, 127, 82).
Aa
White text reads best on this color (4.86:1).
About this color
#377F52 is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.101 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.035 away. White text reads best on it, at 4.86:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.32:1 |
| White text | 4.86:1 |
Values
| HEX | #377F52 |
| RGB | rgb(55, 127, 82) |
| HSL | hsl(143, 40%, 36%) |
| OKLCH | oklch(53.8% 0.101 153.7) |
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 #377F52 | 4.86:1 | AA | Lc -78.9 | Fine for body text |
| Black text on #377F52 | 4.32:1 | AA large text | Lc 30.6 | Non-text elements, placeholder text |
| #377F52 text on white | 4.86:1 | AA | Lc 73.5 | Content text, not long reading |
| #377F52 text on black | 4.32:1 | AA large text | Lc -28.2 | Dividers and decoration only |
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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE6
oklch(93.7% 0.014 155.6)
-
Step 200
200
#CDDED2
oklch(88.4% 0.024 155.1)
-
Step 300
300
#ABCAB3
oklch(81% 0.046 153.2)
-
Step 400
400
#7DAE8C
oklch(70.6% 0.072 154)
-
Step 500
500
#5A9A6F
oklch(63.1% 0.093 153.5)
-
Step 600
600 (this color)
#377F52
oklch(53.8% 0.101 153.7)
-
Step 700
700
#2E7047
oklch(49.1% 0.094 153.7)
-
Step 800
800
#285B3B
oklch(42.6% 0.077 154)
-
Step 900
900
#254B32
oklch(37.7% 0.061 153.5)
-
Step 950
950
#172C1E
oklch(27.1% 0.038 154)
#377F52 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) | #7F764F | 0.089 |
| Deuteranopia (no green cones) | #756E55 | 0.088 |
| Tritanopia (no blue cones) | #237E73 | 0.050 |
| Achromatopsia (no color) | #717171 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #377F52
#377F52
oklch(53.8% 0.101 153.7)
- #915687
#915687
oklch(53.7% 0.102 333.3)
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 #377F52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.035
- Jungle Green #048243 ΔE 0.036
- Dark Sage #598556 ΔE 0.041
- Military Green #667C3E ΔE 0.051
- Viridian #1E9167 ΔE 0.053
- Muddy Green #657432 ΔE 0.057
- Fern Green #548D44 ΔE 0.059
- Swamp #698339 ΔE 0.061
Use #377F52 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.