#518CA4
Closest named color: Dusty Blue (#5A86AD). oklch(60.9% 0.071 226.3), rgb(81, 140, 164).
Aa
Black text reads best on this color (5.63:1).
About this color
#518CA4 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.071 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.027 away. Black text reads best on it, at 5.63:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.63:1 |
| White text | 3.72:1 |
Values
| HEX | #518CA4 |
| RGB | rgb(81, 140, 164) |
| HSL | hsl(197, 34%, 48%) |
| OKLCH | oklch(60.9% 0.071 226.3) |
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 #518CA4 | 3.72:1 | AA large text | Lc -70.2 | Content text, not long reading |
| Black text on #518CA4 | 5.63:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #518CA4 text on white | 3.72:1 | AA large text | Lc 64.7 | Content text, not long reading |
| #518CA4 text on black | 5.63:1 | AA | Lc -37.0 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#AAC6D2
oklch(81% 0.035 225.6)
-
Step 400
400
#7BA8BC
oklch(70.6% 0.056 227.2)
-
Step 500
500 (this color)
#518CA4
oklch(60.9% 0.071 226.3)
-
Step 600
600
#3B7D96
oklch(55.7% 0.077 225.6)
-
Step 700
700
#2C6980
oklch(49.1% 0.072 226)
-
Step 800
800
#265668
oklch(42.8% 0.06 225.4)
-
Step 900
900
#244755
oklch(37.8% 0.047 226.2)
-
Step 950
950
#162932
oklch(26.9% 0.03 229.7)
#518CA4 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) | #7F8AA5 | 0.055 |
| Deuteranopia (no green cones) | #7380A4 | 0.049 |
| Tritanopia (no blue cones) | #239394 | 0.049 |
| Achromatopsia (no color) | #848484 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #518CA4
#518CA4
oklch(60.9% 0.071 226.3)
- #A7765E
#A7765E
oklch(61% 0.071 47)
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 #518CA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.027
- Off Blue #5684AE ΔE 0.032
- Blue Grey #758DA3 ΔE 0.041
- Steel #738595 ΔE 0.042
- Faded Blue #658CBB ΔE 0.044
- Blue NCS #118AB2 ΔE 0.044
- Light Slate Gray #778899 ΔE 0.044
- Cool Blue #4984B8 ΔE 0.045
Use #518CA4 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.