#397E8F
Closest named color: Ocean (#017B92). oklch(55.6% 0.074 216.3), rgb(57, 126, 143).
Aa
White text reads best on this color (4.61:1).
About this color
#397E8F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.074 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.029 away. White text reads best on it, at 4.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.55:1 |
| White text | 4.61:1 |
Values
| HEX | #397E8F |
| RGB | rgb(57, 126, 143) |
| HSL | hsl(192, 43%, 39%) |
| OKLCH | oklch(55.6% 0.074 216.3) |
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 #397E8F | 4.61:1 | AA | Lc -77.3 | Fine for body text |
| Black text on #397E8F | 4.55:1 | AA | Lc 32.3 | Non-text elements, placeholder text |
| #397E8F text on white | 4.61:1 | AA | Lc 71.8 | Content text, not long reading |
| #397E8F text on black | 4.55:1 | AA | Lc -29.8 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECEE
oklch(93.7% 0.01 212.5)
-
Step 200
200
#CCDCE1
oklch(88.4% 0.019 218.4)
-
Step 300
300
#A9C6CE
oklch(80.8% 0.033 216.2)
-
Step 400
400
#7BA9B6
oklch(70.6% 0.053 217.1)
-
Step 500
500
#5794A4
oklch(63.1% 0.068 216.5)
-
Step 600
600 (this color)
#397E8F
oklch(55.6% 0.074 216.3)
-
Step 700
700
#2B6A7A
oklch(49% 0.068 217.3)
-
Step 800
800
#255763
oklch(42.8% 0.057 215.9)
-
Step 900
900
#244851
oklch(37.9% 0.044 215.9)
-
Step 950
950
#162A2F
oklch(27% 0.027 215.5)
#397E8F 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) | #727A90 | 0.065 |
| Deuteranopia (no green cones) | #66718F | 0.059 |
| Tritanopia (no blue cones) | #008483 | 0.039 |
| Achromatopsia (no color) | #757575 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397E8F
#397E8F
oklch(55.6% 0.074 216.3)
- #996455
#996455
oklch(55.6% 0.073 36.5)
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 #397E8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.029
- Cerulean #457B9D ΔE 0.029
- Stormy Blue #507B9C ΔE 0.034
- Teal Blue #01889F ΔE 0.035
- Metallic Blue #4F738E ΔE 0.036
- Teal #008080 ΔE 0.038
- Dull Blue #49759C ΔE 0.041
- Deep Aqua #08787F ΔE 0.041
Use #397E8F 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.