#397F55
Closest named color: Sea Green (#2E8B57). oklch(53.9% 0.097 154.9), rgb(57, 127, 85).
Aa
White text reads best on this color (4.83:1).
About this color
#397F55 is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.097 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 0.036 away. White text reads best on it, at 4.83:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.097) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.34:1 |
| White text | 4.83:1 |
Values
| HEX | #397F55 |
| RGB | rgb(57, 127, 85) |
| HSL | hsl(144, 38%, 36%) |
| OKLCH | oklch(53.9% 0.097 154.9) |
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 #397F55 | 4.83:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #397F55 | 4.34:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #397F55 text on white | 4.83:1 | AA | Lc 73.3 | Content text, not long reading |
| #397F55 text on black | 4.34:1 | AA large text | Lc -28.3 | 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
#E4ECE6
oklch(93.5% 0.012 153.7)
-
Step 200
200
#CDDED2
oklch(88.4% 0.024 155.1)
-
Step 300
300
#ABC9B4
oklch(80.8% 0.044 154.8)
-
Step 400
400
#7EAE8E
oklch(70.8% 0.069 155.1)
-
Step 500
500
#5B9A71
oklch(63.2% 0.09 154.4)
-
Step 600
600 (this color)
#397F55
oklch(53.9% 0.097 154.9)
-
Step 700
700
#307049
oklch(49.2% 0.091 154.4)
-
Step 800
800
#295B3C
oklch(42.7% 0.075 154.4)
-
Step 900
900
#264B34
oklch(37.8% 0.058 155.1)
-
Step 950
950
#172C1E
oklch(27.1% 0.038 154)
#397F55 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) | #7F7652 | 0.087 |
| Deuteranopia (no green cones) | #756F58 | 0.085 |
| Tritanopia (no blue cones) | #257E74 | 0.048 |
| Achromatopsia (no color) | #727272 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397F55
#397F55
oklch(53.9% 0.097 154.9)
- #915885
#915885
oklch(54% 0.097 334.9)
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 #397F55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Green #2E8B57 ΔE 0.036
- Dark Sage #598556 ΔE 0.039
- Jungle Green #048243 ΔE 0.041
- Military Green #667C3E ΔE 0.051
- Viridian #1E9167 ΔE 0.052
- Muddy Green #657432 ΔE 0.057
- Fern Green #548D44 ΔE 0.060
- Swamp #698339 ΔE 0.062
Use #397F55 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.