#518DA4
Closest named color: Dusty Blue (#5A86AD). oklch(61.2% 0.071 224.8), rgb(81, 141, 164).
Aa
Black text reads best on this color (5.69:1).
About this color
#518DA4 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.071 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.029 away. Black text reads best on it, at 5.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.69:1 |
| White text | 3.68:1 |
Values
| HEX | #518DA4 |
| RGB | rgb(81, 141, 164) |
| HSL | hsl(197, 34%, 48%) |
| OKLCH | oklch(61.2% 0.071 224.8) |
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 #518DA4 | 3.68:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #518DA4 | 5.69:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #518DA4 text on white | 3.68:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #518DA4 text on black | 5.69:1 | AA | Lc -37.3 | 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
#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
#7BA9BB
oklch(70.8% 0.056 224.1)
-
Step 500
500 (this color)
#518DA4
oklch(61.2% 0.071 224.8)
-
Step 600
600
#3A7D95
oklch(55.6% 0.077 224.3)
-
Step 700
700
#2B697F
oklch(49% 0.072 224.6)
-
Step 800
800
#255668
oklch(42.7% 0.06 225)
-
Step 900
900
#244754
oklch(37.7% 0.046 224.4)
-
Step 950
950
#162A31
oklch(27.1% 0.029 222.4)
#518DA4 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) | #808AA5 | 0.056 |
| Deuteranopia (no green cones) | #7481A4 | 0.050 |
| Tritanopia (no blue cones) | #239494 | 0.049 |
| Achromatopsia (no color) | #858585 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #518DA4
#518DA4
oklch(61.2% 0.071 224.8)
- #A87660
#A87660
oklch(61.1% 0.071 44.7)
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 #518DA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.029
- Off Blue #5684AE ΔE 0.034
- Blue Grey #758DA3 ΔE 0.041
- Steel #738595 ΔE 0.043
- Light Slate Gray #778899 ΔE 0.044
- Faded Blue #658CBB ΔE 0.044
- Silver Lake Blue #778DA9 ΔE 0.045
- Blue NCS #118AB2 ΔE 0.045
Use #518DA4 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.