#378758
Closest named color: Sea Green (#2E8B57). oklch(56.1% 0.108 154.9), rgb(55, 135, 88).
Aa
Black text reads best on this color (4.76:1).
About this color
#378758 is a medium-dark, moderately saturated green. In OKLCH its lightness is 56%, its chroma 0.108 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 0.014 away. Black text reads best on it, at 4.76:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.76:1 |
| White text | 4.40:1 |
Values
| HEX | #378758 |
| RGB | rgb(55, 135, 88) |
| HSL | hsl(145, 42%, 37%) |
| OKLCH | oklch(56.1% 0.108 154.9) |
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 #378758 | 4.40:1 | AA large text | Lc -75.8 | Fine for body text |
| Black text on #378758 | 4.76:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #378758 text on white | 4.40:1 | AA large text | Lc 70.3 | Content text, not long reading |
| #378758 text on black | 4.76:1 | AA | Lc -31.4 | 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
#CCDFD1
oklch(88.6% 0.028 153.8)
-
Step 300
300
#A9CAB3
oklch(80.8% 0.048 154.8)
-
Step 400
400
#79AF8B
oklch(70.6% 0.078 154.8)
-
Step 500
500
#549B6F
oklch(63.1% 0.098 155.1)
-
Step 600
600 (this color)
#378758
oklch(56.1% 0.108 154.9)
-
Step 700
700
#277147
oklch(49.1% 0.1 155)
-
Step 800
800
#225C3A
oklch(42.7% 0.083 154.8)
-
Step 900
900
#224C32
oklch(37.8% 0.065 154.6)
-
Step 950
950
#152C1D
oklch(26.9% 0.041 154.1)
#378758 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) | #877D55 | 0.096 |
| Deuteranopia (no green cones) | #7C755B | 0.094 |
| Tritanopia (no blue cones) | #1C867B | 0.053 |
| Achromatopsia (no color) | #787878 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378758
#378758
oklch(56.1% 0.108 154.9)
- #9B5B8E
#9B5B8E
oklch(56.1% 0.108 334.8)
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 #378758, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.014
- Viridian #1E9167 ΔE 0.030
- Dark Sage #598556 ΔE 0.032
- Light Forest Green #4F9153 ΔE 0.041
- Jungle Green #048243 ΔE 0.041
- Fern Green #548D44 ΔE 0.042
- Military Green #667C3E ΔE 0.054
- Swamp #698339 ΔE 0.055
Use #378758 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.