#397C6C
Closest named color: Bluegreen (#017A79). oklch(53.8% 0.073 175.6), rgb(57, 124, 108).
Aa
White text reads best on this color (4.91:1).
About this color
#397C6C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.073 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.033 away. White text reads best on it, at 4.91:1.
| 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 | 4.91:1 |
Values
| HEX | #397C6C |
| RGB | rgb(57, 124, 108) |
| HSL | hsl(166, 37%, 35%) |
| OKLCH | oklch(53.8% 0.073 175.6) |
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 #397C6C | 4.91:1 | AA | Lc -79.3 | Fine for body text |
| Black text on #397C6C | 4.27:1 | AA large text | Lc 30.2 | Non-text elements, placeholder text |
| #397C6C text on white | 4.91:1 | AA | Lc 73.9 | Content text, not long reading |
| #397C6C text on black | 4.27:1 | AA large text | Lc -27.8 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CDDDD8
oklch(88.4% 0.018 175.3)
-
Step 300
300
#ABC8BF
oklch(80.9% 0.034 174.7)
-
Step 400
400
#7EAC9F
oklch(70.8% 0.053 175.4)
-
Step 500
500
#5B9787
oklch(63.1% 0.068 175.1)
-
Step 600
600 (this color)
#397C6C
oklch(53.8% 0.073 175.6)
-
Step 700
700
#306D5F
oklch(49% 0.068 176.1)
-
Step 800
800
#29594D
oklch(42.6% 0.056 175)
-
Step 900
900
#264940
oklch(37.6% 0.044 175.3)
-
Step 950
950
#172B26
oklch(27% 0.028 176.4)
#397C6C 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) | #78756B | 0.077 |
| Deuteranopia (no green cones) | #6D6D6D | 0.073 |
| Tritanopia (no blue cones) | #187D77 | 0.023 |
| Achromatopsia (no color) | #717171 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397C6C
#397C6C
oklch(53.8% 0.073 175.6)
- #905C70
#905C70
oklch(53.8% 0.073 355.2)
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 #397C6C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.033
- Teal #008080 ΔE 0.034
- Deep Aqua #08787F ΔE 0.042
- Dark Aquamarine #017371 ΔE 0.044
- Deep Turquoise #017374 ΔE 0.046
- Dark Cyan #008B8B ΔE 0.054
- Dark Sage #598556 ΔE 0.057
- Ocean #017B92 ΔE 0.063
Use #397C6C 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.