#397291
Closest named color: Metallic Blue (#4F738E). oklch(52.7% 0.077 234.6), rgb(57, 114, 145).
Aa
White text reads best on this color (5.26:1).
About this color
#397291 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.077 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.023 away. White text reads best on it, at 5.26:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.98:1 |
| White text | 5.26:1 |
Values
| HEX | #397291 |
| RGB | rgb(57, 114, 145) |
| HSL | hsl(201, 44%, 40%) |
| OKLCH | oklch(52.7% 0.077 234.6) |
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 #397291 | 5.26:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #397291 | 3.98:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #397291 text on white | 5.26:1 | AA | Lc 76.0 | Fine for body text |
| #397291 text on black | 3.98:1 | AA large text | Lc -25.8 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#ACC5D4
oklch(81% 0.034 234.2)
-
Step 400
400
#7FA7BF
oklch(70.8% 0.056 234.9)
-
Step 500
500
#5D91AE
oklch(63.1% 0.071 233.9)
-
Step 600
600 (this color)
#397291
oklch(52.7% 0.077 234.6)
-
Step 700
700
#336784
oklch(49.1% 0.072 235.3)
-
Step 800
800
#2B546B
oklch(42.6% 0.06 235.1)
-
Step 900
900
#284657
oklch(37.8% 0.046 234.7)
-
Step 950
950
#182933
oklch(27.1% 0.029 235.2)
#397291 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) | #637193 | 0.049 |
| Deuteranopia (no green cones) | #576891 | 0.042 |
| Tritanopia (no blue cones) | #007A7C | 0.055 |
| Achromatopsia (no color) | #6C6C6C | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397291
#397291
oklch(52.7% 0.077 234.6)
- #8E5E3E
#8E5E3E
oklch(52.6% 0.078 53.9)
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 #397291, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.023
- Muted Blue #3B719F ΔE 0.024
- Sea Blue #047495 ΔE 0.026
- Dull Blue #49759C ΔE 0.026
- Ocean Blue #03719C ΔE 0.032
- Cerulean #457B9D ΔE 0.033
- Ocean #017B92 ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.037
Use #397291 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.