#397C6D
Closest named color: Bluegreen (#017A79). oklch(53.8% 0.073 176.7), rgb(57, 124, 109).
Aa
White text reads best on this color (4.90:1).
About this color
#397C6D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.073 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.032 away. White text reads best on it, at 4.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.27:1 |
| White text | 4.90:1 |
Values
| HEX | #397C6D |
| RGB | rgb(57, 124, 109) |
| HSL | hsl(167, 37%, 35%) |
| OKLCH | oklch(53.8% 0.073 176.7) |
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 #397C6D | 4.90:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #397C6D | 4.27:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #397C6D text on white | 4.90:1 | AA | Lc 73.8 | Content text, not long reading |
| #397C6D text on black | 4.27:1 | AA large text | Lc -27.9 | 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
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CDDDD9
oklch(88.4% 0.018 179.3)
-
Step 300
300
#ABC8C0
oklch(80.9% 0.033 177)
-
Step 400
400
#7EACA0
oklch(70.8% 0.052 176.8)
-
Step 500
500
#5B9788
oklch(63.1% 0.067 176.3)
-
Step 600
600 (this color)
#397C6D
oklch(53.8% 0.073 176.7)
-
Step 700
700
#306D60
oklch(49% 0.067 177.4)
-
Step 800
800
#29594E
oklch(42.7% 0.056 176.5)
-
Step 900
900
#264941
oklch(37.6% 0.043 177.4)
-
Step 950
950
#172B26
oklch(27% 0.028 176.4)
#397C6D 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) | #78756C | 0.077 |
| Deuteranopia (no green cones) | #6D6D6E | 0.073 |
| Tritanopia (no blue cones) | #177E77 | 0.022 |
| Achromatopsia (no color) | #717171 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397C6D
#397C6D
oklch(53.8% 0.073 176.7)
- #905C6F
#905C6F
oklch(53.8% 0.073 356.3)
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 #397C6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.032
- Teal #008080 ΔE 0.033
- Deep Aqua #08787F ΔE 0.041
- Dark Aquamarine #017371 ΔE 0.044
- Deep Turquoise #017374 ΔE 0.045
- Dark Cyan #008B8B ΔE 0.053
- Dark Sage #598556 ΔE 0.058
- Ocean #017B92 ΔE 0.062
Use #397C6D 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.