#497CDC
Closest named color: Dark Sky Blue (#448EE4). oklch(59.9% 0.156 261.8), rgb(73, 124, 220).
Aa
Black text reads best on this color (5.19:1).
About this color
#497CDC is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.156 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.047 away. Black text reads best on it, at 5.19:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.19:1 |
| White text | 4.03:1 |
Values
| HEX | #497CDC |
| RGB | rgb(73, 124, 220) |
| HSL | hsl(219, 68%, 57%) |
| OKLCH | oklch(59.9% 0.156 261.8) |
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 #497CDC | 4.03:1 | AA large text | Lc -72.8 | Content text, not long reading |
| Black text on #497CDC | 5.19:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #497CDC text on white | 4.03:1 | AA large text | Lc 67.3 | Content text, not long reading |
| #497CDC text on black | 5.19:1 | AA | Lc -34.3 | 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
#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)
#497CDC
oklch(59.9% 0.156 261.8)
-
Step 600
600
#376DD5
oklch(55.5% 0.17 261.9)
-
Step 700
700
#2A5BB9
oklch(49.2% 0.158 261.8)
-
Step 800
800
#244B95
oklch(42.8% 0.13 261.7)
-
Step 900
900
#213F77
oklch(37.7% 0.102 261.6)
-
Step 950
950
#142546
oklch(26.9% 0.066 262.3)
#497CDC 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) | #4E86E0 | 0.028 |
| Deuteranopia (no green cones) | #3478DA | 0.023 |
| Tritanopia (no blue cones) | #0092A1 | 0.128 |
| Achromatopsia (no color) | #7E7E7E | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #497CDC
#497CDC
oklch(59.9% 0.156 261.8)
- #A47700
#A47700
oklch(59.9% 0.123 82.1)
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 #497CDC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.047
- Windows Blue #3778BF ΔE 0.049
- Soft Blue #6488EA ΔE 0.049
- Water Blue #0E87CC ΔE 0.051
- Royal Blue #4169E1 ΔE 0.052
- Clear Blue #247AFD ΔE 0.056
- Cornflower #6A79F7 ΔE 0.057
- Cool Blue #4984B8 ΔE 0.064
Use #497CDC 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.