#377F5C
Closest named color: Sea Green (#2E8B57). oklch(54% 0.092 159.9), rgb(55, 127, 92).
Aa
White text reads best on this color (4.82:1).
About this color
#377F5C is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.092 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.040 away. White text reads best on it, at 4.82:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.35:1 |
| White text | 4.82:1 |
Values
| HEX | #377F5C |
| RGB | rgb(55, 127, 92) |
| HSL | hsl(151, 40%, 36%) |
| OKLCH | oklch(54% 0.092 159.9) |
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 #377F5C | 4.82:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #377F5C | 4.35:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #377F5C text on white | 4.82:1 | AA | Lc 73.3 | Content text, not long reading |
| #377F5C text on black | 4.35:1 | AA large text | Lc -28.4 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E3ECE7
oklch(93.5% 0.012 162)
-
Step 200
200
#CDDED4
oklch(88.5% 0.023 160.2)
-
Step 300
300
#ABC9B7
oklch(80.9% 0.041 159)
-
Step 400
400
#7CAE92
oklch(70.7% 0.067 159.5)
-
Step 500
500
#599978
oklch(63% 0.083 160.2)
-
Step 600
600 (this color)
#377F5C
oklch(54% 0.092 159.9)
-
Step 700
700
#2D6F50
oklch(49% 0.084 160.4)
-
Step 800
800
#275B41
oklch(42.8% 0.071 159.4)
-
Step 900
900
#254B37
oklch(37.8% 0.056 159.1)
-
Step 950
950
#162C20
oklch(27% 0.036 158.9)
#377F5C 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) | #7E765A | 0.087 |
| Deuteranopia (no green cones) | #736F5E | 0.083 |
| Tritanopia (no blue cones) | #1D7E75 | 0.040 |
| Achromatopsia (no color) | #727272 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #377F5C
#377F5C
oklch(54% 0.092 159.9)
- #925980
#925980
oklch(54.1% 0.092 339.6)
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 #377F5C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.040
- Dark Sage #598556 ΔE 0.041
- Jungle Green #048243 ΔE 0.048
- Viridian #1E9167 ΔE 0.052
- Bluegreen #017A79 ΔE 0.055
- Teal #008080 ΔE 0.055
- Military Green #667C3E ΔE 0.056
- Muddy Green #657432 ΔE 0.063
Use #377F5C 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.