#3D84BF
Closest named color: Cool Blue (#4984B8). oklch(59.5% 0.115 246.5), rgb(61, 132, 191).
Aa
Black text reads best on this color (5.25:1).
About this color
#3D84BF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.115 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.014 away. Black text reads best on it, at 5.25:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.25:1 |
| White text | 3.99:1 |
Values
| HEX | #3D84BF |
| RGB | rgb(61, 132, 191) |
| HSL | hsl(207, 52%, 49%) |
| OKLCH | oklch(59.5% 0.115 246.5) |
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 #3D84BF | 3.99:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #3D84BF | 5.25:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #3D84BF text on white | 3.99:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #3D84BF text on black | 5.25:1 | AA | Lc -34.6 | 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 500.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A4C5E4
oklch(81% 0.057 246.9)
-
Step 400
400
#71A6D6
oklch(70.7% 0.09 246.8)
-
Step 500
500 (this color)
#3D84BF
oklch(59.5% 0.115 246.5)
-
Step 600
600
#2678B8
oklch(55.6% 0.126 246.7)
-
Step 700
700
#17659E
oklch(49.1% 0.116 246.2)
-
Step 800
800
#175280
oklch(42.6% 0.097 246.7)
-
Step 900
900
#1B4567
oklch(37.8% 0.075 246.1)
-
Step 950
950
#11283C
oklch(26.9% 0.047 246.9)
#3D84BF 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) | #6A86C2 | 0.048 |
| Deuteranopia (no green cones) | #587ABE | 0.035 |
| Tritanopia (no blue cones) | #009299 | 0.085 |
| Achromatopsia (no color) | #7F7F7F | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D84BF
#3D84BF
oklch(59.5% 0.115 246.5)
- #AC6F26
#AC6F26
oklch(59.4% 0.115 66.4)
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 #3D84BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.014
- Steel Blue #4682B4 ΔE 0.017
- Water Blue #0E87CC ΔE 0.027
- Off Blue #5684AE ΔE 0.033
- Windows Blue #3778BF ΔE 0.035
- Blue NCS #118AB2 ΔE 0.037
- Dusty Blue #5A86AD ΔE 0.039
- Nice Blue #107AB0 ΔE 0.046
Use #3D84BF 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.