#3D87D0
Closest named color: Water Blue (#0E87CC). oklch(61.1% 0.133 250.7), rgb(61, 135, 208).
Aa
Black text reads best on this color (5.57:1).
About this color
#3D87D0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.133 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.024 away. Black text reads best on it, at 5.57:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.57:1 |
| White text | 3.76:1 |
Values
| HEX | #3D87D0 |
| RGB | rgb(61, 135, 208) |
| HSL | hsl(210, 61%, 53%) |
| OKLCH | oklch(61.1% 0.133 250.7) |
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 #3D87D0 | 3.76:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #3D87D0 | 5.57:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #3D87D0 text on white | 3.76:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #3D87D0 text on black | 5.57:1 | AA | Lc -36.8 | 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
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DBF1
oklch(88.4% 0.037 252.1)
-
Step 300
300
#A2C4EA
oklch(80.9% 0.065 251.5)
-
Step 400
400
#6DA5DF
oklch(70.7% 0.104 250.3)
-
Step 500
500 (this color)
#3D87D0
oklch(61.1% 0.133 250.7)
-
Step 600
600
#1F76C4
oklch(55.7% 0.144 250.6)
-
Step 700
700
#0E63A9
oklch(49.2% 0.134 250.3)
-
Step 800
800
#125189
oklch(42.8% 0.111 250.5)
-
Step 900
900
#18436E
oklch(37.6% 0.088 251.3)
-
Step 950
950
#0F2840
oklch(27% 0.055 249.7)
#3D87D0 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) | #668BD3 | 0.043 |
| Deuteranopia (no green cones) | #517DCF | 0.030 |
| Tritanopia (no blue cones) | #0098A2 | 0.100 |
| Achromatopsia (no color) | #838383 | 0.133 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D87D0
#3D87D0
oklch(61.1% 0.133 250.7)
- #B47300
#B47300
oklch(61% 0.132 70.6)
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 #3D87D0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.024
- Dark Sky Blue #448EE4 ΔE 0.034
- Cool Blue #4984B8 ΔE 0.036
- Steel Blue #4682B4 ΔE 0.042
- Windows Blue #3778BF ΔE 0.047
- Off Blue #5684AE ΔE 0.054
- Faded Blue #658CBB ΔE 0.054
- Blue NCS #118AB2 ΔE 0.056
Use #3D87D0 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.