#3281CD
Closest named color: Water Blue (#0E87CC). oklch(59.2% 0.139 250.7), rgb(50, 129, 205).
Aa
Black text reads best on this color (5.15:1).
About this color
#3281CD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.139 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.021 away. Black text reads best on it, at 5.15:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.15:1 |
| White text | 4.07:1 |
Values
| HEX | #3281CD |
| RGB | rgb(50, 129, 205) |
| HSL | hsl(209, 61%, 50%) |
| OKLCH | oklch(59.2% 0.139 250.7) |
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 #3281CD | 4.07:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #3281CD | 5.15:1 | AA | Lc 36.5 | Non-text elements, placeholder text |
| #3281CD text on white | 4.07:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #3281CD text on black | 5.15:1 | AA | Lc -34.1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A3C4E8
oklch(80.8% 0.062 250.8)
-
Step 400
400
#70A5DD
oklch(70.7% 0.1 250.7)
-
Step 500
500
#478DD4
oklch(63% 0.129 250.9)
-
Step 600
600 (this color)
#3281CD
oklch(59.2% 0.139 250.7)
-
Step 700
700
#1663A7
oklch(49.2% 0.13 250.6)
-
Step 800
800
#165187
oklch(42.7% 0.107 250.5)
-
Step 900
900
#1A436C
oklch(37.6% 0.084 251.1)
-
Step 950
950
#11283F
oklch(27.1% 0.052 250.3)
#3281CD 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) | #5E86D0 | 0.044 |
| Deuteranopia (no green cones) | #4677CC | 0.029 |
| Tritanopia (no blue cones) | #00939D | 0.104 |
| Achromatopsia (no color) | #7E7E7E | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3281CD
#3281CD
oklch(59.2% 0.139 250.7)
- #AD6E00
#AD6E00
oklch(59.2% 0.128 70.3)
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 #3281CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.021
- Windows Blue #3778BF ΔE 0.029
- Cool Blue #4984B8 ΔE 0.039
- Steel Blue #4682B4 ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.050
- Nice Blue #107AB0 ΔE 0.052
- Blue NCS #118AB2 ΔE 0.056
- Off Blue #5684AE ΔE 0.058
Use #3281CD 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.