#508FC3
Closest named color: Faded Blue (#658CBB). oklch(63% 0.102 245.3), rgb(80, 143, 195).
Aa
Black text reads best on this color (6.05:1).
About this color
#508FC3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.102 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.023 away. Black text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.05:1 |
| White text | 3.46:1 |
Values
| HEX | #508FC3 |
| RGB | rgb(80, 143, 195) |
| HSL | hsl(207, 49%, 54%) |
| OKLCH | oklch(63% 0.102 245.3) |
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 #508FC3 | 3.46:1 | AA large text | Lc -67.5 | Content text, not long reading |
| Black text on #508FC3 | 6.05:1 | AA | Lc 42.0 | Non-text elements, placeholder text |
| #508FC3 text on white | 3.46:1 | AA large text | Lc 62.0 | Content text, not long reading |
| #508FC3 text on black | 6.05:1 | AA | Lc -39.7 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDCEB
oklch(88.6% 0.028 244.7)
-
Step 300
300
#A7C5DF
oklch(81% 0.049 244.6)
-
Step 400
400
#76A6D0
oklch(70.7% 0.08 245.7)
-
Step 500
500 (this color)
#508FC3
oklch(63% 0.102 245.3)
-
Step 600
600
#3279B0
oklch(55.7% 0.111 245.2)
-
Step 700
700
#246597
oklch(49% 0.103 245.6)
-
Step 800
800
#20537B
oklch(42.8% 0.086 245.5)
-
Step 900
900
#204563
oklch(37.8% 0.067 245.4)
-
Step 950
950
#14283A
oklch(26.9% 0.043 247.2)
#508FC3 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) | #7990C5 | 0.046 |
| Deuteranopia (no green cones) | #6985C2 | 0.035 |
| Tritanopia (no blue cones) | #009BA1 | 0.081 |
| Achromatopsia (no color) | #8A8A8A | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #508FC3
#508FC3
oklch(63% 0.102 245.3)
- #B37C41
#B37C41
oklch(63% 0.102 66)
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 #508FC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.023
- Cool Blue #4984B8 ΔE 0.034
- Dusty Blue #5A86AD ΔE 0.036
- Off Blue #5684AE ΔE 0.038
- Steel Blue #4682B4 ΔE 0.042
- Water Blue #0E87CC ΔE 0.050
- Blue NCS #118AB2 ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.051
Use #508FC3 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.