#397F74
Closest named color: Teal (#008080). oklch(54.8% 0.073 181.8), rgb(57, 127, 116).
Aa
White text reads best on this color (4.70:1).
About this color
#397F74 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.073 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.028 away. White text reads best on it, at 4.70:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.46:1 |
| White text | 4.70:1 |
Values
| HEX | #397F74 |
| RGB | rgb(57, 127, 116) |
| HSL | hsl(171, 38%, 36%) |
| OKLCH | oklch(54.8% 0.073 181.8) |
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 #397F74 | 4.70:1 | AA | Lc -77.9 | Fine for body text |
| Black text on #397F74 | 4.46:1 | AA large text | Lc 31.6 | Non-text elements, placeholder text |
| #397F74 text on white | 4.70:1 | AA | Lc 72.5 | Content text, not long reading |
| #397F74 text on black | 4.46:1 | AA large text | Lc -29.2 | 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
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CDDDDA
oklch(88.5% 0.018 183.5)
-
Step 300
300
#AAC8C2
oklch(80.9% 0.033 182)
-
Step 400
400
#7CACA3
oklch(70.8% 0.053 181.8)
-
Step 500
500
#59978C
oklch(63.1% 0.067 181.5)
-
Step 600
600 (this color)
#397F74
oklch(54.8% 0.073 181.8)
-
Step 700
700
#2D6D63
oklch(49% 0.067 181.6)
-
Step 800
800
#275951
oklch(42.7% 0.056 181.7)
-
Step 900
900
#254943
oklch(37.6% 0.043 181.9)
-
Step 950
950
#162B27
oklch(27% 0.028 180.5)
#397F74 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) | #7A7874 | 0.078 |
| Deuteranopia (no green cones) | #6F7075 | 0.074 |
| Tritanopia (no blue cones) | #0D817C | 0.022 |
| Achromatopsia (no color) | #747474 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397F74
#397F74
oklch(54.8% 0.073 181.8)
- #955F6E
#955F6E
oklch(54.9% 0.073 1.7)
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 #397F74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.028
- Bluegreen #017A79 ΔE 0.034
- Deep Aqua #08787F ΔE 0.041
- Dark Cyan #008B8B ΔE 0.043
- Dark Aquamarine #017371 ΔE 0.050
- Deep Turquoise #017374 ΔE 0.050
- Ocean #017B92 ΔE 0.056
- Dusty Teal #4C9085 ΔE 0.057
Use #397F74 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.