#3389CD
Closest named color: Water Blue (#0E87CC). oklch(61.1% 0.131 246.4), rgb(51, 137, 205).
Aa
Black text reads best on this color (5.60:1).
About this color
#3389CD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.131 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.017 away. Black text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.60:1 |
| White text | 3.74:1 |
Values
| HEX | #3389CD |
| RGB | rgb(51, 137, 205) |
| HSL | hsl(206, 61%, 50%) |
| OKLCH | oklch(61.1% 0.131 246.4) |
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 #3389CD | 3.74:1 | AA large text | Lc -70.2 | Content text, not long reading |
| Black text on #3389CD | 5.60:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #3389CD text on white | 3.74:1 | AA large text | Lc 64.7 | Content text, not long reading |
| #3389CD text on black | 5.60:1 | AA | Lc -37.0 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF6
oklch(93.5% 0.019 248)
-
Step 200
200
#C7DCF0
oklch(88.5% 0.036 246.9)
-
Step 300
300
#9FC5E8
oklch(80.8% 0.064 246.5)
-
Step 400
400
#69A7DD
oklch(70.8% 0.102 246.2)
-
Step 500
500 (this color)
#3389CD
oklch(61.1% 0.131 246.4)
-
Step 600
600
#0478C1
oklch(55.6% 0.143 246.4)
-
Step 700
700
#0065A4
oklch(49.2% 0.127 246.3)
-
Step 800
800
#015287
oklch(42.6% 0.11 246.6)
-
Step 900
900
#11456C
oklch(37.8% 0.085 246)
-
Step 950
950
#0C283F
oklch(26.8% 0.055 246.6)
#3389CD 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) | #6A8CD0 | 0.053 |
| Deuteranopia (no green cones) | #547DCC | 0.039 |
| Tritanopia (no blue cones) | #0099A1 | 0.094 |
| Achromatopsia (no color) | #848484 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3389CD
#3389CD
oklch(61.1% 0.131 246.4)
- #B7710F
#B7710F
oklch(61.1% 0.131 66.6)
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 #3389CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.017
- Cool Blue #4984B8 ΔE 0.034
- Steel Blue #4682B4 ΔE 0.039
- Dark Sky Blue #448EE4 ΔE 0.039
- Blue NCS #118AB2 ΔE 0.047
- Windows Blue #3778BF ΔE 0.048
- Off Blue #5684AE ΔE 0.051
- Faded Blue #658CBB ΔE 0.053
Use #3389CD 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.