#497BDC
Closest named color: Windows Blue (#3778BF). oklch(59.7% 0.158 262.2), rgb(73, 123, 220).
Aa
Black text reads best on this color (5.14:1).
About this color
#497BDC is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.158 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.049 away. Black text reads best on it, at 5.14:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.14:1 |
| White text | 4.07:1 |
Values
| HEX | #497BDC |
| RGB | rgb(73, 123, 220) |
| HSL | hsl(220, 68%, 57%) |
| OKLCH | oklch(59.7% 0.158 262.2) |
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 #497BDC | 4.07:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #497BDC | 5.14:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #497BDC text on white | 4.07:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #497BDC text on black | 5.14:1 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF6
oklch(88.5% 0.042 261.7)
-
Step 300
300
#A6C1F3
oklch(80.8% 0.077 262.6)
-
Step 400
400
#76A0ED
oklch(70.7% 0.122 261.9)
-
Step 500
500 (this color)
#497BDC
oklch(59.7% 0.158 262.2)
-
Step 600
600
#386DD6
oklch(55.6% 0.171 262.2)
-
Step 700
700
#2B5AB9
oklch(49% 0.159 262.4)
-
Step 800
800
#244A96
oklch(42.6% 0.132 262.3)
-
Step 900
900
#223F77
oklch(37.7% 0.102 262.1)
-
Step 950
950
#142546
oklch(26.9% 0.066 262.3)
#497BDC 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) | #4C85E0 | 0.027 |
| Deuteranopia (no green cones) | #3277DA | 0.024 |
| Tritanopia (no blue cones) | #0091A1 | 0.128 |
| Achromatopsia (no color) | #7E7E7E | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #497BDC
#497BDC
oklch(59.7% 0.158 262.2)
- #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 #497BDC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.049
- Royal Blue #4169E1 ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.050
- Soft Blue #6488EA ΔE 0.051
- Water Blue #0E87CC ΔE 0.053
- Clear Blue #247AFD ΔE 0.055
- Cornflower #6A79F7 ΔE 0.057
- Cerulean Blue #056EEE ΔE 0.062
Use #497BDC 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.