#397B96
Closest named color: Cerulean (#457B9D). oklch(55.1% 0.079 227.6), rgb(57, 123, 150).
Aa
White text reads best on this color (4.72:1).
About this color
#397B96 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.079 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.017 away. White text reads best on it, at 4.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.44:1 |
| White text | 4.72:1 |
Values
| HEX | #397B96 |
| RGB | rgb(57, 123, 150) |
| HSL | hsl(197, 45%, 41%) |
| OKLCH | oklch(55.1% 0.079 227.6) |
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 #397B96 | 4.72:1 | AA | Lc -78.0 | Fine for body text |
| Black text on #397B96 | 4.44:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #397B96 text on white | 4.72:1 | AA | Lc 72.6 | Content text, not long reading |
| #397B96 text on black | 4.44:1 | AA large text | Lc -29.1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#AAC6D3
oklch(81% 0.035 227.5)
-
Step 400
400
#7BA8BD
oklch(70.7% 0.057 228.4)
-
Step 500
500
#5792AC
oklch(63% 0.073 228.1)
-
Step 600
600 (this color)
#397B96
oklch(55.1% 0.079 227.6)
-
Step 700
700
#2C6981
oklch(49.1% 0.073 227.1)
-
Step 800
800
#265569
oklch(42.6% 0.061 228.5)
-
Step 900
900
#244755
oklch(37.8% 0.047 226.2)
-
Step 950
950
#162932
oklch(26.9% 0.03 229.7)
#397B96 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) | #6D7997 | 0.058 |
| Deuteranopia (no green cones) | #606F96 | 0.052 |
| Tritanopia (no blue cones) | #008384 | 0.050 |
| Achromatopsia (no color) | #737373 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397B96
#397B96
oklch(55.1% 0.079 227.6)
- #986349
#986349
oklch(55.1% 0.079 46.7)
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 #397B96, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.017
- Stormy Blue #507B9C ΔE 0.025
- Dull Blue #49759C ΔE 0.026
- Ocean #017B92 ΔE 0.027
- Metallic Blue #4F738E ΔE 0.029
- Sea Blue #047495 ΔE 0.036
- Muted Blue #3B719F ΔE 0.037
- Teal Blue #01889F ΔE 0.040
Use #397B96 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.