#397966
Closest named color: Bluegreen (#017A79). oklch(52.8% 0.073 171.6), rgb(57, 121, 102).
Aa
White text reads best on this color (5.12:1).
About this color
#397966 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.073 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.035 away. White text reads best on it, at 5.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.10:1 |
| White text | 5.12:1 |
Values
| HEX | #397966 |
| RGB | rgb(57, 121, 102) |
| HSL | hsl(162, 36%, 35%) |
| OKLCH | oklch(52.8% 0.073 171.6) |
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 #397966 | 5.12:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #397966 | 4.10:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #397966 text on white | 5.12:1 | AA | Lc 75.1 | Fine for body text |
| #397966 text on black | 4.10:1 | AA large text | Lc -26.6 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CEDDD7
oklch(88.5% 0.018 170)
-
Step 300
300
#ACC8BE
oklch(80.9% 0.033 171.9)
-
Step 400
400
#7FAC9D
oklch(70.8% 0.053 172.2)
-
Step 500
500
#5D9784
oklch(63.1% 0.068 171.2)
-
Step 600
600 (this color)
#397966
oklch(52.8% 0.073 171.6)
-
Step 700
700
#336D5C
oklch(49% 0.067 171.9)
-
Step 800
800
#2B594B
oklch(42.7% 0.056 171.5)
-
Step 900
900
#28493F
oklch(37.7% 0.043 172.5)
-
Step 950
950
#182B25
oklch(27% 0.027 172.2)
#397966 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) | #767265 | 0.076 |
| Deuteranopia (no green cones) | #6C6B67 | 0.072 |
| Tritanopia (no blue cones) | #1E7A73 | 0.024 |
| Achromatopsia (no color) | #6E6E6E | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397966
#397966
oklch(52.8% 0.073 171.6)
- #8C5970
#8C5970
oklch(52.7% 0.074 351.3)
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 #397966, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.035
- Dark Aquamarine #017371 ΔE 0.041
- Teal #008080 ΔE 0.041
- Deep Turquoise #017374 ΔE 0.043
- Deep Aqua #08787F ΔE 0.045
- Dark Sage #598556 ΔE 0.060
- Dark Cyan #008B8B ΔE 0.064
- Dark Aqua #05696B ΔE 0.065
Use #397966 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.