#3381CE
Closest named color: Water Blue (#0E87CC). oklch(59.3% 0.14 251.2), rgb(51, 129, 206).
Aa
Black text reads best on this color (5.17:1).
About this color
#3381CE is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.140 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 5.17:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.17:1 |
| White text | 4.06:1 |
Values
| HEX | #3381CE |
| RGB | rgb(51, 129, 206) |
| HSL | hsl(210, 61%, 50%) |
| OKLCH | oklch(59.3% 0.14 251.2) |
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 #3381CE | 4.06:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #3381CE | 5.17:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #3381CE text on white | 4.06:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #3381CE text on black | 5.17:1 | 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
#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
#A3C4E9
oklch(80.9% 0.064 251.5)
-
Step 400
400
#70A5DE
oklch(70.8% 0.101 251.1)
-
Step 500
500
#488DD4
oklch(63.1% 0.128 251.1)
-
Step 600
600 (this color)
#3381CE
oklch(59.3% 0.14 251.2)
-
Step 700
700
#1762A7
oklch(49% 0.131 251.3)
-
Step 800
800
#175187
oklch(42.8% 0.107 250.7)
-
Step 900
900
#1B436C
oklch(37.6% 0.084 251.5)
-
Step 950
950
#11283F
oklch(27.1% 0.052 250.3)
#3381CE 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) | #5D86D1 | 0.043 |
| Deuteranopia (no green cones) | #4678CC | 0.026 |
| Tritanopia (no blue cones) | #00939D | 0.105 |
| Achromatopsia (no color) | #7E7E7E | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3381CE
#3381CE
oklch(59.3% 0.14 251.2)
- #AD6F00
#AD6F00
oklch(59.4% 0.128 71.1)
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 #3381CE, 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 0.030
- Cool Blue #4984B8 ΔE 0.040
- Steel Blue #4682B4 ΔE 0.043
- Dark Sky Blue #448EE4 ΔE 0.049
- Nice Blue #107AB0 ΔE 0.053
- Blue NCS #118AB2 ΔE 0.058
- Off Blue #5684AE ΔE 0.059
Use #3381CE 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.