#3D84B7
Closest named color: Steel Blue (#4682B4). oklch(59.1% 0.106 242.7), rgb(61, 132, 183).
Aa
Black text reads best on this color (5.18:1).
About this color
#3D84B7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.106 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.009 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 5.18:1 |
| White text | 4.05:1 |
Values
| HEX | #3D84B7 |
| RGB | rgb(61, 132, 183) |
| HSL | hsl(205, 50%, 48%) |
| OKLCH | oklch(59.1% 0.106 242.7) |
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 #3D84B7 | 4.05:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #3D84B7 | 5.18:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #3D84B7 text on white | 4.05:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #3D84B7 text on black | 5.18:1 | AA | Lc -34.2 | Non-text elements, placeholder text |
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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CBDCEA
oklch(88.6% 0.027 242.8)
-
Step 300
300
#A7C5DD
oklch(80.9% 0.047 242.4)
-
Step 400
400
#76A7CD
oklch(70.8% 0.077 242.4)
-
Step 500
500
#5190C0
oklch(63.1% 0.098 243.2)
-
Step 600
600 (this color)
#3D84B7
oklch(59.1% 0.106 242.7)
-
Step 700
700
#246694
oklch(49.1% 0.099 243.2)
-
Step 800
800
#205378
oklch(42.6% 0.082 243.5)
-
Step 900
900
#204560
oklch(37.6% 0.063 242.6)
-
Step 950
950
#142938
oklch(27.1% 0.039 241.3)
#3D84B7 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) | #6D85B9 | 0.051 |
| Deuteranopia (no green cones) | #5C79B6 | 0.040 |
| Tritanopia (no blue cones) | #009096 | 0.075 |
| Achromatopsia (no color) | #7E7E7E | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D84B7
#3D84B7
oklch(59.1% 0.106 242.7)
- #A96E33
#A96E33
oklch(59% 0.106 63)
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 #3D84B7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.009
- Cool Blue #4984B8 ΔE 0.011
- Off Blue #5684AE ΔE 0.026
- Blue NCS #118AB2 ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.032
- Water Blue #0E87CC ΔE 0.036
- Windows Blue #3778BF ΔE 0.040
- Nice Blue #107AB0 ΔE 0.042
Use #3D84B7 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.