#3B87AA
Closest named color: Blue NCS (#118AB2). oklch(59.1% 0.092 231.1), rgb(59, 135, 170).
Aa
Black text reads best on this color (5.23:1).
About this color
#3B87AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.092 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.021 away. Black text reads best on it, at 5.23:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.23:1 |
| White text | 4.01:1 |
Values
| HEX | #3B87AA |
| RGB | rgb(59, 135, 170) |
| HSL | hsl(199, 48%, 45%) |
| OKLCH | oklch(59.1% 0.092 231.1) |
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 #3B87AA | 4.01:1 | AA large text | Lc -72.7 | Content text, not long reading |
| Black text on #3B87AA | 5.23:1 | AA | Lc 36.9 | Non-text elements, placeholder text |
| #3B87AA text on white | 4.01:1 | AA large text | Lc 67.2 | Content text, not long reading |
| #3B87AA text on black | 5.23:1 | AA | Lc -34.5 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2EBF0
oklch(93.5% 0.012 231.7)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A7C6D7
oklch(80.9% 0.041 231.9)
-
Step 400
400
#76A9C3
oklch(70.8% 0.066 231)
-
Step 500
500
#4F93B3
oklch(63.1% 0.084 230.5)
-
Step 600
600 (this color)
#3B87AA
oklch(59.1% 0.092 231.1)
-
Step 700
700
#216988
oklch(49.1% 0.085 230.9)
-
Step 800
800
#1E566F
oklch(42.8% 0.071 231.1)
-
Step 900
900
#1F4759
oklch(37.7% 0.054 229.9)
-
Step 950
950
#132A34
oklch(27.1% 0.034 228.3)
#3B87AA 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) | #7585AC | 0.062 |
| Deuteranopia (no green cones) | #667AA9 | 0.053 |
| Tritanopia (no blue cones) | #009193 | 0.058 |
| Achromatopsia (no color) | #7F7F7F | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B87AA
#3B87AA
oklch(59.1% 0.092 231.1)
- #A96D49
#A96D49
oklch(59.1% 0.092 51.1)
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 #3B87AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.021
- Steel Blue #4682B4 ΔE 0.026
- Off Blue #5684AE ΔE 0.027
- Cool Blue #4984B8 ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.030
- Teal Blue #01889F ΔE 0.032
- Cerulean #457B9D ΔE 0.035
- Stormy Blue #507B9C ΔE 0.037
Use #3B87AA 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.