#508DB8
Closest named color: Dusty Blue (#5A86AD). oklch(62% 0.091 241.1), rgb(80, 141, 184).
Aa
Black text reads best on this color (5.84:1).
About this color
#508DB8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.091 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.023 away. Black text reads best on it, at 5.84:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.84:1 |
| White text | 3.59:1 |
Values
| HEX | #508DB8 |
| RGB | rgb(80, 141, 184) |
| HSL | hsl(205, 42%, 52%) |
| OKLCH | oklch(62% 0.091 241.1) |
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 #508DB8 | 3.59:1 | AA large text | Lc -68.9 | Content text, not long reading |
| Black text on #508DB8 | 5.84:1 | AA | Lc 40.7 | Non-text elements, placeholder text |
| #508DB8 text on white | 3.59:1 | AA large text | Lc 63.4 | Content text, not long reading |
| #508DB8 text on black | 5.84:1 | AA | Lc -38.3 | 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
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A8C5DB
oklch(80.9% 0.044 240.9)
-
Step 400
400
#78A7C9
oklch(70.7% 0.071 240.4)
-
Step 500
500 (this color)
#508DB8
oklch(62% 0.091 241.1)
-
Step 600
600
#357AA8
oklch(55.6% 0.099 241)
-
Step 700
700
#276790
oklch(49.2% 0.092 240.6)
-
Step 800
800
#225475
oklch(42.8% 0.077 240.8)
-
Step 900
900
#22455E
oklch(37.6% 0.059 241.7)
-
Step 950
950
#142937
oklch(27% 0.038 239.4)
#508DB8 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) | #7A8DBA | 0.048 |
| Deuteranopia (no green cones) | #6C82B7 | 0.040 |
| Tritanopia (no blue cones) | #00989C | 0.073 |
| Achromatopsia (no color) | #878787 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #508DB8
#508DB8
oklch(62% 0.091 241.1)
- #AE794B
#AE794B
oklch(62% 0.091 60.9)
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 #508DB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.023
- Faded Blue #658CBB ΔE 0.023
- Off Blue #5684AE ΔE 0.026
- Cool Blue #4984B8 ΔE 0.028
- Steel Blue #4682B4 ΔE 0.034
- Blue NCS #118AB2 ΔE 0.042
- Silver Lake Blue #778DA9 ΔE 0.048
- Blue Grey #758DA3 ΔE 0.050
Use #508DB8 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.