#3D748E
Closest named color: Metallic Blue (#4F738E). oklch(53.2% 0.071 230.6), rgb(61, 116, 142).
Aa
White text reads best on this color (5.13:1).
About this color
#3D748E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.071 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.019 away. White text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.08:1 |
| White text | 5.13:1 |
Values
| HEX | #3D748E |
| RGB | rgb(61, 116, 142) |
| HSL | hsl(199, 40%, 40%) |
| OKLCH | oklch(53.2% 0.071 230.6) |
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 #3D748E | 5.13:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #3D748E | 4.08:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #3D748E text on white | 5.13:1 | AA | Lc 75.3 | Fine for body text |
| #3D748E text on black | 4.08:1 | AA large text | Lc -26.5 | 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
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE3
oklch(88.6% 0.018 229)
-
Step 300
300
#ADC5D2
oklch(81% 0.032 231.4)
-
Step 400
400
#80A7BB
oklch(70.7% 0.051 230.7)
-
Step 500
500
#5F91AA
oklch(63.1% 0.066 230.9)
-
Step 600
600 (this color)
#3D748E
oklch(53.2% 0.071 230.6)
-
Step 700
700
#35687F
oklch(49.2% 0.066 229.5)
-
Step 800
800
#2D5567
oklch(42.8% 0.054 229.1)
-
Step 900
900
#294654
oklch(37.7% 0.042 230.2)
-
Step 950
950
#182931
oklch(27% 0.027 229.2)
#3D748E 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) | #67728F | 0.050 |
| Deuteranopia (no green cones) | #5B6A8E | 0.043 |
| Tritanopia (no blue cones) | #007B7C | 0.052 |
| Achromatopsia (no color) | #6D6D6D | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D748E
#3D748E
oklch(53.2% 0.071 230.6)
- #8E6046
#8E6046
oklch(53.2% 0.071 50.1)
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 #3D748E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.019
- Dull Blue #49759C ΔE 0.027
- Cerulean #457B9D ΔE 0.030
- Sea Blue #047495 ΔE 0.031
- Muted Blue #3B719F ΔE 0.031
- Ocean #017B92 ΔE 0.032
- Stormy Blue #507B9C ΔE 0.036
- Ocean Blue #03719C ΔE 0.040
Use #3D748E 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.