#397D5B
Closest named color: Dark Sage (#598556). oklch(53.6% 0.088 159.5), rgb(57, 125, 91).
Aa
White text reads best on this color (4.93:1).
About this color
#397D5B is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.088 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Sage (#598556), ΔE 0.044 away. White text reads best on it, at 4.93:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.088) |
| Temperature | in between |
| Nearest name | Dark Sage (#598556) |
| Black text | 4.25:1 |
| White text | 4.93:1 |
Values
| HEX | #397D5B |
| RGB | rgb(57, 125, 91) |
| HSL | hsl(150, 37%, 36%) |
| OKLCH | oklch(53.6% 0.088 159.5) |
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 #397D5B | 4.93:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #397D5B | 4.25:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #397D5B text on white | 4.93:1 | AA | Lc 74.0 | Content text, not long reading |
| #397D5B text on black | 4.25:1 | AA large text | Lc -27.7 | 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
#F3F7F4
oklch(97.2% 0.006 153.8)
-
Step 100
100
#E4ECE7
oklch(93.6% 0.011 158.8)
-
Step 200
200
#CDDED4
oklch(88.5% 0.023 160.2)
-
Step 300
300
#ACC9B8
oklch(81% 0.039 159.7)
-
Step 400
400
#7EAD93
oklch(70.6% 0.063 160)
-
Step 500
500
#5C9978
oklch(63.2% 0.081 159.2)
-
Step 600
600 (this color)
#397D5B
oklch(53.6% 0.088 159.5)
-
Step 700
700
#316F50
oklch(49.1% 0.082 159.4)
-
Step 800
800
#295A42
oklch(42.6% 0.067 160.3)
-
Step 900
900
#274A38
oklch(37.7% 0.052 160.1)
-
Step 950
950
#172C21
oklch(27.1% 0.034 160.1)
#397D5B 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) | #7C7559 | 0.083 |
| Deuteranopia (no green cones) | #726D5D | 0.082 |
| Tritanopia (no blue cones) | #237C74 | 0.040 |
| Achromatopsia (no color) | #707070 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397D5B
#397D5B
oklch(53.6% 0.088 159.5)
- #8F587E
#8F587E
oklch(53.5% 0.089 339.2)
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 #397D5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sage #598556 ΔE 0.044
- Sea Green #2E8B57 ΔE 0.046
- Jungle Green #048243 ΔE 0.051
- Bluegreen #017A79 ΔE 0.054
- Teal #008080 ΔE 0.056
- Military Green #667C3E ΔE 0.056
- Viridian #1E9167 ΔE 0.058
- Dark Aquamarine #017371 ΔE 0.060
Use #397D5B 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.