#518DBE
Closest named color: Faded Blue (#658CBB). oklch(62.3% 0.097 244.9), rgb(81, 141, 190).
Aa
Black text reads best on this color (5.90:1).
About this color
#518DBE is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.097 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.021 away. Black text reads best on it, at 5.90:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.90:1 |
| White text | 3.55:1 |
Values
| HEX | #518DBE |
| RGB | rgb(81, 141, 190) |
| HSL | hsl(207, 46%, 53%) |
| OKLCH | oklch(62.3% 0.097 244.9) |
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 #518DBE | 3.55:1 | AA large text | Lc -68.5 | Content text, not long reading |
| Black text on #518DBE | 5.90:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #518DBE text on white | 3.55:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #518DBE text on black | 5.90:1 | AA | Lc -38.7 | 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
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CBDBEA
oklch(88.4% 0.027 246.4)
-
Step 300
300
#A8C5DE
oklch(81% 0.047 244.4)
-
Step 400
400
#78A6CD
oklch(70.7% 0.076 244.7)
-
Step 500
500 (this color)
#518DBE
oklch(62.3% 0.097 244.9)
-
Step 600
600
#3679AD
oklch(55.7% 0.106 244.9)
-
Step 700
700
#286595
oklch(49% 0.099 245.7)
-
Step 800
800
#225378
oklch(42.7% 0.081 244.3)
-
Step 900
900
#224561
oklch(37.8% 0.063 244.7)
-
Step 950
950
#142839
oklch(26.9% 0.041 245.8)
#518DBE 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) | #788EC0 | 0.045 |
| Deuteranopia (no green cones) | #6983BD | 0.035 |
| Tritanopia (no blue cones) | #00999E | 0.080 |
| Achromatopsia (no color) | #888888 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #518DBE
#518DBE
oklch(62.3% 0.097 244.9)
- #B07A44
#B07A44
oklch(62.3% 0.098 64.3)
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 #518DBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.021
- Cool Blue #4984B8 ΔE 0.028
- Dusty Blue #5A86AD ΔE 0.028
- Off Blue #5684AE ΔE 0.030
- Steel Blue #4682B4 ΔE 0.035
- Blue NCS #118AB2 ΔE 0.046
- Water Blue #0E87CC ΔE 0.050
- Silver Lake Blue #778DA9 ΔE 0.051
Use #518DBE 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.