#507CD2
Closest named color: Windows Blue (#3778BF). oklch(59.6% 0.14 262.5), rgb(80, 124, 210).
Aa
Black text reads best on this color (5.15:1).
About this color
#507CD2 is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.140 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.040 away. Black text reads best on it, at 5.15:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.140) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.15:1 |
| White text | 4.07:1 |
Values
| HEX | #507CD2 |
| RGB | rgb(80, 124, 210) |
| HSL | hsl(220, 59%, 57%) |
| OKLCH | oklch(59.6% 0.14 262.5) |
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 #507CD2 | 4.07:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #507CD2 | 5.15:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #507CD2 text on white | 4.07:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #507CD2 text on black | 5.15:1 | AA | Lc -34.0 | 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
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CCDAF3
oklch(88.6% 0.038 262.1)
-
Step 300
300
#A9C1EE
oklch(80.8% 0.069 262.9)
-
Step 400
400
#7BA0E5
oklch(70.6% 0.11 262.3)
-
Step 500
500 (this color)
#507CD2
oklch(59.6% 0.14 262.5)
-
Step 600
600
#406FCB
oklch(55.6% 0.152 262.3)
-
Step 700
700
#325CB0
oklch(49.1% 0.142 262.4)
-
Step 800
800
#2A4C8F
oklch(42.8% 0.118 262.3)
-
Step 900
900
#264072
oklch(37.8% 0.092 262.2)
-
Step 950
950
#172643
oklch(27.2% 0.058 262.5)
#507CD2 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) | #5684D5 | 0.023 |
| Deuteranopia (no green cones) | #4378D0 | 0.018 |
| Tritanopia (no blue cones) | #008F9D | 0.118 |
| Achromatopsia (no color) | #7E7E7E | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #507CD2
#507CD2
oklch(59.6% 0.14 262.5)
- #A37700
#A37700
oklch(59.7% 0.123 82.6)
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 #507CD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.040
- Water Blue #0E87CC ΔE 0.048
- Dark Sky Blue #448EE4 ΔE 0.050
- Cool Blue #4984B8 ΔE 0.051
- Soft Blue #6488EA ΔE 0.053
- Steel Blue #4682B4 ΔE 0.054
- Royal Blue #4169E1 ΔE 0.061
- Off Blue #5684AE ΔE 0.065
Use #507CD2 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.