#518DA5
Closest named color: Dusty Blue (#5A86AD). oklch(61.2% 0.072 225.9), rgb(81, 141, 165).
Aa
Black text reads best on this color (5.70:1).
About this color
#518DA5 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.072 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.028 away. Black text reads best on it, at 5.70:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.70:1 |
| White text | 3.68:1 |
Values
| HEX | #518DA5 |
| RGB | rgb(81, 141, 165) |
| HSL | hsl(197, 34%, 48%) |
| OKLCH | oklch(61.2% 0.072 225.9) |
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 #518DA5 | 3.68:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #518DA5 | 5.70:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #518DA5 text on white | 3.68:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #518DA5 text on black | 5.70:1 | AA | Lc -37.4 | 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
#A9C6D2
oklch(80.9% 0.036 224.7)
-
Step 400
400
#7BA8BC
oklch(70.6% 0.056 227.2)
-
Step 500
500 (this color)
#518DA5
oklch(61.2% 0.072 225.9)
-
Step 600
600
#397D96
oklch(55.6% 0.078 225.1)
-
Step 700
700
#2B6980
oklch(49.1% 0.073 225.7)
-
Step 800
800
#255668
oklch(42.7% 0.06 225)
-
Step 900
900
#244755
oklch(37.8% 0.047 226.2)
-
Step 950
950
#162A32
oklch(27.2% 0.03 225.6)
#518DA5 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) | #808BA6 | 0.055 |
| Deuteranopia (no green cones) | #7481A5 | 0.050 |
| Tritanopia (no blue cones) | #219495 | 0.050 |
| Achromatopsia (no color) | #858585 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #518DA5
#518DA5
oklch(61.2% 0.072 225.9)
- #A9765F
#A9765F
oklch(61.2% 0.073 45.2)
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 #518DA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.028
- Off Blue #5684AE ΔE 0.033
- Blue Grey #758DA3 ΔE 0.041
- Faded Blue #658CBB ΔE 0.043
- Steel #738595 ΔE 0.043
- Light Slate Gray #778899 ΔE 0.044
- Silver Lake Blue #778DA9 ΔE 0.045
- Blue NCS #118AB2 ΔE 0.045
Use #518DA5 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.