#378557
Closest named color: Sea Green (#2E8B57). oklch(55.5% 0.106 154.9), rgb(55, 133, 87).
Aa
Black text reads best on this color (4.65:1).
About this color
#378557 is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.106 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Sea Green (#2E8B57), ΔE 0.019 away. Black text reads best on it, at 4.65:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.106) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.65:1 |
| White text | 4.51:1 |
Values
| HEX | #378557 |
| RGB | rgb(55, 133, 87) |
| HSL | hsl(145, 41%, 37%) |
| OKLCH | oklch(55.5% 0.106 154.9) |
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 #378557 | 4.51:1 | AA | Lc -76.6 | Fine for body text |
| Black text on #378557 | 4.65:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #378557 text on white | 4.51:1 | AA | Lc 71.1 | Content text, not long reading |
| #378557 text on black | 4.65:1 | AA | Lc -30.6 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE6
oklch(93.7% 0.014 155.6)
-
Step 200
200
#CCDFD2
oklch(88.6% 0.027 155.9)
-
Step 300
300
#A9CAB3
oklch(80.8% 0.048 154.8)
-
Step 400
400
#7AAF8C
oklch(70.7% 0.076 155.1)
-
Step 500
500
#559B6F
oklch(63.1% 0.098 154.8)
-
Step 600
600 (this color)
#378557
oklch(55.5% 0.106 154.9)
-
Step 700
700
#297147
oklch(49.2% 0.099 154.6)
-
Step 800
800
#245C3B
oklch(42.8% 0.081 154.9)
-
Step 900
900
#234B32
oklch(37.6% 0.063 154.5)
-
Step 950
950
#152C1E
oklch(26.9% 0.039 155.9)
#378557 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) | #857B54 | 0.095 |
| Deuteranopia (no green cones) | #7A735A | 0.093 |
| Tritanopia (no blue cones) | #1E8479 | 0.052 |
| Achromatopsia (no color) | #767676 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378557
#378557
oklch(55.5% 0.106 154.9)
- #995A8C
#995A8C
oklch(55.6% 0.106 334.9)
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 #378557, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.019
- Dark Sage #598556 ΔE 0.033
- Viridian #1E9167 ΔE 0.036
- Jungle Green #048243 ΔE 0.039
- Light Forest Green #4F9153 ΔE 0.046
- Fern Green #548D44 ΔE 0.046
- Military Green #667C3E ΔE 0.052
- Swamp #698339 ΔE 0.056
Use #378557 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.