#397A7B
Closest named color: Bluegreen (#017A79). oklch(53.8% 0.066 196.7), rgb(57, 122, 123).
Aa
White text reads best on this color (4.94:1).
About this color
#397A7B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.066 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.027 away. White text reads best on it, at 4.94:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.24:1 |
| White text | 4.94:1 |
Values
| HEX | #397A7B |
| RGB | rgb(57, 122, 123) |
| HSL | hsl(181, 37%, 35%) |
| OKLCH | oklch(53.8% 0.066 196.7) |
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 #397A7B | 4.94:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #397A7B | 4.24:1 | AA large text | Lc 30.0 | Dividers and decoration only |
| #397A7B text on white | 4.94:1 | AA | Lc 74.1 | Content text, not long reading |
| #397A7B text on black | 4.24:1 | AA large text | Lc -27.6 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CDDDDD
oklch(88.6% 0.017 196.8)
-
Step 300
300
#ABC7C7
oklch(80.9% 0.03 196.6)
-
Step 400
400
#7EAAAB
oklch(70.7% 0.047 197.9)
-
Step 500
500
#5B9596
oklch(63.1% 0.061 197.1)
-
Step 600
600 (this color)
#397A7B
oklch(53.8% 0.066 196.7)
-
Step 700
700
#306C6D
oklch(49.2% 0.062 196.8)
-
Step 800
800
#295858
oklch(42.8% 0.051 195.4)
-
Step 900
900
#264849
oklch(37.6% 0.04 198.1)
-
Step 950
950
#172A2B
oklch(26.9% 0.025 200)
#397A7B 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) | #73757B | 0.069 |
| Deuteranopia (no green cones) | #686D7B | 0.064 |
| Tritanopia (no blue cones) | #037E7A | 0.027 |
| Achromatopsia (no color) | #707070 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397A7B
#397A7B
oklch(53.8% 0.066 196.7)
- #915E60
#915E60
oklch(53.8% 0.067 17)
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 #397A7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.027
- Deep Aqua #08787F ΔE 0.027
- Teal #008080 ΔE 0.027
- Deep Turquoise #017374 ΔE 0.039
- Ocean #017B92 ΔE 0.041
- Dark Aquamarine #017371 ΔE 0.041
- Metallic Blue #4F738E ΔE 0.048
- Dark Cyan #008B8B ΔE 0.051
Use #397A7B 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.