#518EFE
Closest named color: Dodger Blue (#1E90FF). oklch(66.1% 0.178 261.4), rgb(81, 142, 254).
Aa
Black text reads best on this color (6.65:1).
About this color
#518EFE is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.178 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.030 away. Black text reads best on it, at 6.65:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.65:1 |
| White text | 3.15:1 |
Values
| HEX | #518EFE |
| RGB | rgb(81, 142, 254) |
| HSL | hsl(219, 99%, 66%) |
| OKLCH | oklch(66.1% 0.178 261.4) |
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 #518EFE | 3.15:1 | AA large text | Lc -63.7 | Content text, not long reading |
| Black text on #518EFE | 6.65:1 | AA | Lc 45.7 | Large or bold text, headings |
| #518EFE text on white | 3.15:1 | AA large text | Lc 58.3 | Large or bold text, headings |
| #518EFE text on black | 6.65:1 | AA | Lc -43.4 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C8DAFA
oklch(88.5% 0.048 262)
-
Step 300
300
#A1C1FA
oklch(80.8% 0.088 261.8)
-
Step 400
400
#6E9FF7
oklch(70.6% 0.14 261.4)
-
Step 500
500 (this color)
#518EFE
oklch(66.1% 0.178 261.4)
-
Step 600
600
#2A6BE2
oklch(55.6% 0.193 261.2)
-
Step 700
700
#1E58C5
oklch(49.1% 0.181 261.5)
-
Step 800
800
#1A499F
oklch(42.7% 0.149 261.2)
-
Step 900
900
#1B3E7E
oklch(37.7% 0.116 261.2)
-
Step 950
950
#11254A
oklch(27.1% 0.074 261.5)
#518EFE 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) | #5799FF | 0.030 |
| Deuteranopia (no green cones) | #3689FC | 0.027 |
| Tritanopia (no blue cones) | #00A8BA | 0.143 |
| Achromatopsia (no color) | #919191 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #518EFE
#518EFE
oklch(66.1% 0.178 261.4)
- #BC8800
#BC8800
oklch(66% 0.136 81.4)
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 #518EFE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.030
- Chefchaouen Blue #4895EF ΔE 0.032
- Soft Blue #6488EA ΔE 0.034
- Cornflower Blue #6495ED ΔE 0.039
- Dark Sky Blue #448EE4 ΔE 0.042
- Cornflower #6A79F7 ΔE 0.054
- Clear Blue #247AFD ΔE 0.065
- Lavender Blue #8B88F8 ΔE 0.067
Use #518EFE 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.