#508EDF
Closest named color: Dark Sky Blue (#448EE4). oklch(64.2% 0.138 255.9), rgb(80, 142, 223).
Aa
Black text reads best on this color (6.27:1).
About this color
#508EDF is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.138 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.012 away. Black text reads best on it, at 6.27:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.27:1 |
| White text | 3.34:1 |
Values
| HEX | #508EDF |
| RGB | rgb(80, 142, 223) |
| HSL | hsl(214, 69%, 59%) |
| OKLCH | oklch(64.2% 0.138 255.9) |
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 #508EDF | 3.34:1 | AA large text | Lc -66.1 | Content text, not long reading |
| Black text on #508EDF | 6.27:1 | AA | Lc 43.4 | Non-text elements, placeholder text |
| #508EDF text on white | 3.34:1 | AA large text | Lc 60.6 | Content text, not long reading |
| #508EDF text on black | 6.27:1 | AA | Lc -41.1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#C9DBF2
oklch(88.5% 0.037 254.6)
-
Step 300
300
#A4C3EC
oklch(80.9% 0.067 255.5)
-
Step 400
400
#73A3E3
oklch(70.7% 0.108 255.9)
-
Step 500
500 (this color)
#508EDF
oklch(64.2% 0.138 255.9)
-
Step 600
600
#2E73C9
oklch(55.7% 0.15 255.8)
-
Step 700
700
#2060AE
oklch(49.2% 0.14 255.7)
-
Step 800
800
#1D4E8D
oklch(42.6% 0.117 256.3)
-
Step 900
900
#1E4270
oklch(37.8% 0.089 255.7)
-
Step 950
950
#122742
oklch(27.1% 0.057 255.5)
#508EDF 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) | #6B94E2 | 0.034 |
| Deuteranopia (no green cones) | #5686DD | 0.021 |
| Tritanopia (no blue cones) | #00A1AC | 0.113 |
| Achromatopsia (no color) | #8C8C8C | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #508EDF
#508EDF
oklch(64.2% 0.138 255.9)
- #BB7F00
#BB7F00
oklch(64.2% 0.135 75.7)
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 #508EDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.012
- Chefchaouen Blue #4895EF ΔE 0.027
- Soft Blue #6488EA ΔE 0.032
- Cornflower Blue #6495ED ΔE 0.035
- Dodger Blue #1E90FF ΔE 0.053
- Water Blue #0E87CC ΔE 0.054
- Faded Blue #658CBB ΔE 0.056
- Cool Blue #4984B8 ΔE 0.062
Use #508EDF 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.