#509BD6
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.7% 0.115 244.6), rgb(80, 155, 214).
Aa
Black text reads best on this color (7.00:1).
About this color
#509BD6 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.115 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.045 away. Black text reads best on it, at 7.00:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.00:1 |
| White text | 2.99:1 |
Values
| HEX | #509BD6 |
| RGB | rgb(80, 155, 214) |
| HSL | hsl(206, 62%, 58%) |
| OKLCH | oklch(66.7% 0.115 244.6) |
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 #509BD6 | 2.99:1 | Fails | Lc -61.8 | Content text, not long reading |
| Black text on #509BD6 | 7.00:1 | AAA | Lc 47.6 | Large or bold text, headings |
| #509BD6 text on white | 2.99:1 | Fails | Lc 56.4 | Large or bold text, headings |
| #509BD6 text on black | 7.00:1 | AAA | Lc -45.3 | Large or bold text, headings |
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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A3C5E3
oklch(80.9% 0.056 245.2)
-
Step 400
400
#6FA7D5
oklch(70.7% 0.09 244.3)
-
Step 500
500 (this color)
#509BD6
oklch(66.7% 0.115 244.6)
-
Step 600
600
#1F79B7
oklch(55.6% 0.126 244.5)
-
Step 700
700
#0F669E
oklch(49.2% 0.117 244.5)
-
Step 800
800
#125380
oklch(42.7% 0.097 244.7)
-
Step 900
900
#184567
oklch(37.7% 0.076 244.8)
-
Step 950
950
#10293C
oklch(27.1% 0.047 243.8)
#509BD6 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) | #819CD9 | 0.053 |
| Deuteranopia (no green cones) | #6F8FD5 | 0.042 |
| Tritanopia (no blue cones) | #00A9AF | 0.088 |
| Achromatopsia (no color) | #959595 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509BD6
#509BD6
oklch(66.7% 0.115 244.6)
- #C58440
#C58440
oklch(66.7% 0.116 64.6)
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 #509BD6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.045
- Cornflower Blue #6495ED ΔE 0.046
- Dark Sky Blue #448EE4 ΔE 0.048
- Faded Blue #658CBB ΔE 0.051
- Soft Blue #6488EA ΔE 0.066
- Greyblue #77A1B5 ΔE 0.068
- Cool Blue #4984B8 ΔE 0.072
- Water Blue #0E87CC ΔE 0.073
Use #509BD6 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.