#378057
Closest named color: Sea Green (#2E8B57). oklch(54.2% 0.098 156.3), rgb(55, 128, 87).
Aa
White text reads best on this color (4.78:1).
About this color
#378057 is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.098 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.034 away. White text reads best on it, at 4.78:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.38:1 |
| White text | 4.78:1 |
Values
| HEX | #378057 |
| RGB | rgb(55, 128, 87) |
| HSL | hsl(146, 40%, 36%) |
| OKLCH | oklch(54.2% 0.098 156.3) |
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 #378057 | 4.78:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #378057 | 4.38:1 | AA large text | Lc 31.1 | Non-text elements, placeholder text |
| #378057 text on white | 4.78:1 | AA | Lc 73.0 | Content text, not long reading |
| #378057 text on black | 4.38:1 | AA large text | Lc -28.7 | 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
#E3EDE6
oklch(93.7% 0.014 155.6)
-
Step 200
200
#CDDED2
oklch(88.4% 0.024 155.1)
-
Step 300
300
#ABCAB5
oklch(81% 0.044 155.7)
-
Step 400
400
#7CAE8E
oklch(70.6% 0.071 156)
-
Step 500
500
#599A73
oklch(63.2% 0.09 156.3)
-
Step 600
600 (this color)
#378057
oklch(54.2% 0.098 156.3)
-
Step 700
700
#2D704B
oklch(49.1% 0.091 156.4)
-
Step 800
800
#275B3D
oklch(42.7% 0.075 155.9)
-
Step 900
900
#254B34
oklch(37.7% 0.059 155.6)
-
Step 950
950
#162C1F
oklch(27% 0.037 156.8)
#378057 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) | #7F7754 | 0.088 |
| Deuteranopia (no green cones) | #756F5A | 0.088 |
| Tritanopia (no blue cones) | #207F75 | 0.046 |
| Achromatopsia (no color) | #727272 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378057
#378057
oklch(54.2% 0.098 156.3)
- #935885
#935885
oklch(54.2% 0.099 336.1)
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 #378057, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.034
- Dark Sage #598556 ΔE 0.039
- Jungle Green #048243 ΔE 0.041
- Viridian #1E9167 ΔE 0.049
- Military Green #667C3E ΔE 0.052
- Fern Green #548D44 ΔE 0.060
- Muddy Green #657432 ΔE 0.060
- Light Forest Green #4F9153 ΔE 0.061
Use #378057 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.