#397E57
Closest named color: Sea Green (#2E8B57). oklch(53.7% 0.094 156.4), rgb(57, 126, 87).
Aa
White text reads best on this color (4.88:1).
About this color
#397E57 is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.094 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 0.040 away. White text reads best on it, at 4.88:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Sea Green (#2E8B57) |
| Black text | 4.29:1 |
| White text | 4.88:1 |
Values
| HEX | #397E57 |
| RGB | rgb(57, 126, 87) |
| HSL | hsl(146, 38%, 36%) |
| OKLCH | oklch(53.7% 0.094 156.4) |
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 #397E57 | 4.88:1 | AA | Lc -79.1 | Fine for body text |
| Black text on #397E57 | 4.29:1 | AA large text | Lc 30.4 | Non-text elements, placeholder text |
| #397E57 text on white | 4.88:1 | AA | Lc 73.7 | Content text, not long reading |
| #397E57 text on black | 4.29:1 | AA large text | Lc -28.0 | 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
#F3F7F4
oklch(97.2% 0.006 153.8)
-
Step 100
100
#E4ECE6
oklch(93.5% 0.012 153.7)
-
Step 200
200
#CDDED3
oklch(88.5% 0.024 157.5)
-
Step 300
300
#ABC9B6
oklch(80.8% 0.042 157.5)
-
Step 400
400
#7EAE8F
oklch(70.8% 0.068 155.9)
-
Step 500
500
#5B9974
oklch(63% 0.086 156.7)
-
Step 600
600 (this color)
#397E57
oklch(53.7% 0.094 156.4)
-
Step 700
700
#306F4C
oklch(49% 0.087 156.7)
-
Step 800
800
#295B3E
oklch(42.8% 0.073 156)
-
Step 900
900
#264B35
oklch(37.8% 0.057 156.2)
-
Step 950
950
#172C1F
oklch(27.1% 0.037 155.9)
#397E57 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) | #7D7555 | 0.085 |
| Deuteranopia (no green cones) | #736E59 | 0.083 |
| Tritanopia (no blue cones) | #257D74 | 0.045 |
| Achromatopsia (no color) | #717171 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397E57
#397E57
oklch(53.7% 0.094 156.4)
- #905882
#905882
oklch(53.7% 0.093 336.6)
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 #397E57, 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 0.044
- Military Green #667C3E ΔE 0.052
- Viridian #1E9167 ΔE 0.055
- Muddy Green #657432 ΔE 0.058
- Bluegreen #017A79 ΔE 0.060
- Teal #008080 ΔE 0.061
Use #397E57 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.