#397A7E
Closest named color: Deep Aqua (#08787F). oklch(53.9% 0.066 200.8), rgb(57, 122, 126).
Aa
White text reads best on this color (4.93:1).
About this color
#397A7E is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.066 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.027 away. White text reads best on it, at 4.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.25:1 |
| White text | 4.93:1 |
Values
| HEX | #397A7E |
| RGB | rgb(57, 122, 126) |
| HSL | hsl(183, 38%, 36%) |
| OKLCH | oklch(53.9% 0.066 200.8) |
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 #397A7E | 4.93:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #397A7E | 4.25:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #397A7E text on white | 4.93:1 | AA | Lc 74.0 | Content text, not long reading |
| #397A7E text on black | 4.25:1 | AA large text | Lc -27.7 | 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
#ABC7C8
oklch(80.9% 0.03 199.2)
-
Step 400
400
#7EAAAD
oklch(70.7% 0.047 201.4)
-
Step 500
500
#5B9598
oklch(63.1% 0.061 200)
-
Step 600
600 (this color)
#397A7E
oklch(53.9% 0.066 200.8)
-
Step 700
700
#306B6F
oklch(49% 0.061 201.3)
-
Step 800
800
#29575A
oklch(42.6% 0.051 201.1)
-
Step 900
900
#26484A
oklch(37.7% 0.04 200.5)
-
Step 950
950
#172A2B
oklch(26.9% 0.025 200)
#397A7E 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) | #72757E | 0.067 |
| Deuteranopia (no green cones) | #676D7E | 0.062 |
| Tritanopia (no blue cones) | #007E7B | 0.029 |
| Achromatopsia (no color) | #707070 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397A7E
#397A7E
oklch(53.9% 0.066 200.8)
- #915F5E
#915F5E
oklch(53.9% 0.066 20.7)
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 #397A7E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.027
- Teal #008080 ΔE 0.028
- Bluegreen #017A79 ΔE 0.029
- Ocean #017B92 ΔE 0.037
- Deep Turquoise #017374 ΔE 0.041
- Dark Aquamarine #017371 ΔE 0.043
- Metallic Blue #4F738E ΔE 0.044
- Dark Cyan #008B8B ΔE 0.050
Use #397A7E 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.