#3481CF
Closest named color: Water Blue (#0E87CC). oklch(59.4% 0.141 251.7), rgb(52, 129, 207).
Aa
Black text reads best on this color (5.18:1).
About this color
#3481CF is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.141 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.022 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.141) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #3481CF |
| RGB | rgb(52, 129, 207) |
| HSL | hsl(210, 62%, 51%) |
| OKLCH | oklch(59.4% 0.141 251.7) |
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 #3481CF | 4.04:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #3481CF | 5.18:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #3481CF text on white | 4.04:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #3481CF text on black | 5.18:1 | AA | Lc -34.3 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C7DBF2
oklch(88.4% 0.038 251.9)
-
Step 300
300
#A0C4ED
oklch(80.8% 0.07 252)
-
Step 400
400
#6BA5E3
oklch(70.7% 0.11 251.1)
-
Step 500
500 (this color)
#3481CF
oklch(59.4% 0.141 251.7)
-
Step 600
600
#1975C9
oklch(55.6% 0.153 251.6)
-
Step 700
700
#0662AE
oklch(49.2% 0.142 251.5)
-
Step 800
800
#0D508D
oklch(42.7% 0.119 251.7)
-
Step 900
900
#164370
oklch(37.7% 0.091 251.6)
-
Step 950
950
#0E2842
oklch(27.1% 0.058 250.8)
#3481CF 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) | #5D86D2 | 0.042 |
| Deuteranopia (no green cones) | #4578CD | 0.025 |
| Tritanopia (no blue cones) | #00939E | 0.105 |
| Achromatopsia (no color) | #7E7E7E | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3481CF
#3481CF
oklch(59.4% 0.141 251.7)
- #AC6F00
#AC6F00
oklch(59.2% 0.127 71.6)
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 #3481CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.022
- Windows Blue #3778BF ΔE 0.032
- Cool Blue #4984B8 ΔE 0.041
- Steel Blue #4682B4 ΔE 0.044
- Dark Sky Blue #448EE4 ΔE 0.048
- Nice Blue #107AB0 ΔE 0.055
- Blue NCS #118AB2 ΔE 0.059
- Off Blue #5684AE ΔE 0.060
Use #3481CF 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.