#3D729F
Closest named color: Muted Blue (#3B719F). oklch(53.6% 0.091 246.2), rgb(61, 114, 159).
Aa
White text reads best on this color (5.11:1).
About this color
#3D729F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.091 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.004 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #3D729F |
| RGB | rgb(61, 114, 159) |
| HSL | hsl(208, 45%, 43%) |
| OKLCH | oklch(53.6% 0.091 246.2) |
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 #3D729F | 5.11:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #3D729F | 4.10:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #3D729F text on white | 5.11:1 | AA | Lc 75.1 | Fine for body text |
| #3D729F text on black | 4.10:1 | AA large text | Lc -26.6 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#ACC4DA
oklch(80.9% 0.041 246)
-
Step 400
400
#7FA5C8
oklch(70.7% 0.066 246.7)
-
Step 500
500
#5E8EB9
oklch(63% 0.083 246.6)
-
Step 600
600 (this color)
#3D729F
oklch(53.6% 0.091 246.2)
-
Step 700
700
#34658E
oklch(49.1% 0.085 245.9)
-
Step 800
800
#2C5273
oklch(42.6% 0.07 246.6)
-
Step 900
900
#28445D
oklch(37.6% 0.055 246.8)
-
Step 950
950
#182836
oklch(27% 0.034 245.9)
#3D729F 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) | #5F73A1 | 0.040 |
| Deuteranopia (no green cones) | #51699E | 0.031 |
| Tritanopia (no blue cones) | #007D82 | 0.072 |
| Achromatopsia (no color) | #6E6E6E | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D729F
#3D729F
oklch(53.6% 0.091 246.2)
- #91622E
#91622E
oklch(53.6% 0.091 66.3)
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 #3D729F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.004
- Flat Blue #3C73A8 ΔE 0.014
- Dull Blue #49759C ΔE 0.017
- Cerulean #457B9D ΔE 0.030
- Ocean Blue #03719C ΔE 0.032
- Metallic Blue #4F738E ΔE 0.033
- French Blue #436BAD ΔE 0.034
- Nice Blue #107AB0 ΔE 0.036
Use #3D729F 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.