#5187AE
Closest named color: Dusty Blue (#5A86AD). oklch(60.2% 0.083 241.4), rgb(81, 135, 174).
Aa
Black text reads best on this color (5.42:1).
About this color
#5187AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.083 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.009 away. Black text reads best on it, at 5.42:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.42:1 |
| White text | 3.86:1 |
Values
| HEX | #5187AE |
| RGB | rgb(81, 135, 174) |
| HSL | hsl(205, 36%, 50%) |
| OKLCH | oklch(60.2% 0.083 241.4) |
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 #5187AE | 3.86:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #5187AE | 5.42:1 | AA | Lc 38.0 | Non-text elements, placeholder text |
| #5187AE text on white | 3.86:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #5187AE text on black | 5.42:1 | AA | Lc -35.6 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#AAC5D9
oklch(81% 0.041 240.1)
-
Step 400
400
#7CA6C6
oklch(70.6% 0.065 241.7)
-
Step 500
500 (this color)
#5187AE
oklch(60.2% 0.083 241.4)
-
Step 600
600
#3E7AA3
oklch(55.7% 0.089 240.8)
-
Step 700
700
#2F668C
oklch(49.1% 0.084 241.5)
-
Step 800
800
#285372
oklch(42.6% 0.07 242.3)
-
Step 900
900
#26455C
oklch(37.7% 0.054 242.2)
-
Step 950
950
#172936
oklch(27.2% 0.034 241)
#5187AE 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) | #7687B0 | 0.044 |
| Deuteranopia (no green cones) | #697DAD | 0.037 |
| Tritanopia (no blue cones) | #189194 | 0.069 |
| Achromatopsia (no color) | #818181 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5187AE
#5187AE
oklch(60.2% 0.083 241.4)
- #A5754B
#A5754B
oklch(60.2% 0.083 61.4)
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 #5187AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.009
- Off Blue #5684AE ΔE 0.009
- Cool Blue #4984B8 ΔE 0.021
- Steel Blue #4682B4 ΔE 0.023
- Faded Blue #658CBB ΔE 0.033
- Blue NCS #118AB2 ΔE 0.038
- Stormy Blue #507B9C ΔE 0.039
- Cerulean #457B9D ΔE 0.043
Use #5187AE 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.