#397F66
Closest named color: Teal (#008080). oklch(54.4% 0.082 167.3), rgb(57, 127, 102).
Aa
White text reads best on this color (4.77:1).
About this color
#397F66 is a medium-dark, moderately saturated green. In OKLCH its lightness is 54%, its chroma 0.082 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Teal (#008080), ΔE 0.043 away. White text reads best on it, at 4.77:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.082) |
| Temperature | in between |
| Nearest name | Teal (#008080) |
| Black text | 4.40:1 |
| White text | 4.77:1 |
Values
| HEX | #397F66 |
| RGB | rgb(57, 127, 102) |
| HSL | hsl(159, 38%, 36%) |
| OKLCH | oklch(54.4% 0.082 167.3) |
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 #397F66 | 4.77:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #397F66 | 4.40:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #397F66 text on white | 4.77:1 | AA | Lc 72.9 | Content text, not long reading |
| #397F66 text on black | 4.40:1 | AA large text | Lc -28.8 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E4ECE8
oklch(93.6% 0.01 164.9)
-
Step 200
200
#CDDED6
oklch(88.6% 0.021 166)
-
Step 300
300
#ABC9BC
oklch(81% 0.037 167.4)
-
Step 400
400
#7DAD99
oklch(70.8% 0.059 167)
-
Step 500
500
#5A9880
oklch(63% 0.075 167.3)
-
Step 600
600 (this color)
#397F66
oklch(54.4% 0.082 167.3)
-
Step 700
700
#2E6E58
oklch(49% 0.075 167.9)
-
Step 800
800
#285A48
oklch(42.7% 0.062 167.4)
-
Step 900
900
#254A3C
oklch(37.7% 0.049 167.1)
-
Step 950
950
#172B23
oklch(26.9% 0.03 166.8)
#397F66 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) | #7C7765 | 0.082 |
| Deuteranopia (no green cones) | #726F68 | 0.080 |
| Tritanopia (no blue cones) | #1C7F78 | 0.030 |
| Achromatopsia (no color) | #737373 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397F66
#397F66
oklch(54.4% 0.082 167.3)
- #935C79
#935C79
oklch(54.5% 0.082 347.3)
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 #397F66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.043
- Bluegreen #017A79 ΔE 0.044
- Dark Sage #598556 ΔE 0.045
- Sea Green #2E8B57 ΔE 0.049
- Deep Aqua #08787F ΔE 0.055
- Viridian #1E9167 ΔE 0.055
- Dark Aquamarine #017371 ΔE 0.056
- Dark Cyan #008B8B ΔE 0.056
Use #397F66 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.