#508BD3
Closest named color: Dark Sky Blue (#448EE4). oklch(62.9% 0.126 254.4), rgb(80, 139, 211).
Aa
Black text reads best on this color (5.97:1).
About this color
#508BD3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.126 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.026 away. Black text reads best on it, at 5.97:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.97:1 |
| White text | 3.51:1 |
Values
| HEX | #508BD3 |
| RGB | rgb(80, 139, 211) |
| HSL | hsl(213, 60%, 57%) |
| OKLCH | oklch(62.9% 0.126 254.4) |
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 #508BD3 | 3.51:1 | AA large text | Lc -68.0 | Content text, not long reading |
| Black text on #508BD3 | 5.97:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #508BD3 text on white | 3.51:1 | AA large text | Lc 62.5 | Content text, not long reading |
| #508BD3 text on black | 5.97:1 | AA | Lc -39.2 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CADBF0
oklch(88.5% 0.034 253.7)
-
Step 300
300
#A6C3E8
oklch(80.8% 0.061 254.7)
-
Step 400
400
#76A4DD
oklch(70.8% 0.098 254.3)
-
Step 500
500 (this color)
#508BD3
oklch(62.9% 0.126 254.4)
-
Step 600
600
#3374C1
oklch(55.6% 0.137 254.5)
-
Step 700
700
#2561A6
oklch(49% 0.127 254.3)
-
Step 800
800
#215087
oklch(42.8% 0.105 254.3)
-
Step 900
900
#20426C
oklch(37.6% 0.083 254.9)
-
Step 950
950
#14273F
oklch(27% 0.052 255)
#508BD3 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) | #6C90D6 | 0.035 |
| Deuteranopia (no green cones) | #5A83D2 | 0.022 |
| Tritanopia (no blue cones) | #009CA5 | 0.104 |
| Achromatopsia (no color) | #898989 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #508BD3
#508BD3
oklch(62.9% 0.126 254.4)
- #B57C19
#B57C19
oklch(62.9% 0.126 74.6)
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 #508BD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.026
- Faded Blue #658CBB ΔE 0.042
- Water Blue #0E87CC ΔE 0.044
- Soft Blue #6488EA ΔE 0.044
- Cool Blue #4984B8 ΔE 0.044
- Chefchaouen Blue #4895EF ΔE 0.045
- Cornflower Blue #6495ED ΔE 0.051
- Steel Blue #4682B4 ΔE 0.052
Use #508BD3 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.