#397498
Closest named color: Muted Blue (#3B719F). oklch(53.5% 0.084 237.9), rgb(57, 116, 152).
Aa
White text reads best on this color (5.09:1).
About this color
#397498 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.084 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.016 away. White text reads best on it, at 5.09:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.12:1 |
| White text | 5.09:1 |
Values
| HEX | #397498 |
| RGB | rgb(57, 116, 152) |
| HSL | hsl(203, 45%, 41%) |
| OKLCH | oklch(53.5% 0.084 237.9) |
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 #397498 | 5.09:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #397498 | 4.12:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #397498 text on white | 5.09:1 | AA | Lc 74.9 | Content text, not long reading |
| #397498 text on black | 4.12:1 | AA large text | Lc -26.8 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDBE6
oklch(88.4% 0.021 241.4)
-
Step 300
300
#ABC5D6
oklch(80.9% 0.037 236.6)
-
Step 400
400
#7DA7C2
oklch(70.8% 0.06 236.9)
-
Step 500
500
#5B90B3
oklch(63% 0.077 238.6)
-
Step 600
600 (this color)
#397498
oklch(53.5% 0.084 237.9)
-
Step 700
700
#316788
oklch(49.2% 0.078 238)
-
Step 800
800
#29546E
oklch(42.7% 0.064 237.4)
-
Step 900
900
#264559
oklch(37.6% 0.05 238.4)
-
Step 950
950
#172934
oklch(27.1% 0.031 236.4)
#397498 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) | #63749A | 0.048 |
| Deuteranopia (no green cones) | #566A97 | 0.040 |
| Tritanopia (no blue cones) | #007D80 | 0.060 |
| Achromatopsia (no color) | #6E6E6E | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397498
#397498
oklch(53.5% 0.084 237.9)
- #92603A
#92603A
oklch(53.5% 0.084 57)
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 #397498, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.016
- Dull Blue #49759C ΔE 0.018
- Cerulean #457B9D ΔE 0.025
- Metallic Blue #4F738E ΔE 0.025
- Flat Blue #3C73A8 ΔE 0.027
- Sea Blue #047495 ΔE 0.028
- Ocean Blue #03719C ΔE 0.031
- Stormy Blue #507B9C ΔE 0.033
Use #397498 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.