#497BB5
Closest named color: Steel Blue (#4682B4). oklch(57.4% 0.105 253.2), rgb(73, 123, 181).
Aa
Black text reads best on this color (4.78:1).
About this color
#497BB5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.105 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.020 away. Black text reads best on it, at 4.78:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.78:1 |
| White text | 4.38:1 |
Values
| HEX | #497BB5 |
| RGB | rgb(73, 123, 181) |
| HSL | hsl(212, 43%, 50%) |
| OKLCH | oklch(57.4% 0.105 253.2) |
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 #497BB5 | 4.38:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #497BB5 | 4.78:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #497BB5 text on white | 4.38:1 | AA large text | Lc 70.3 | Content text, not long reading |
| #497BB5 text on black | 4.78:1 | AA | Lc -31.4 | 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 600.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CDDBEB
oklch(88.6% 0.027 251.7)
-
Step 300
300
#ACC3DF
oklch(80.9% 0.047 253.5)
-
Step 400
400
#7FA4CF
oklch(70.7% 0.075 252.6)
-
Step 500
500
#5E8CC3
oklch(63% 0.098 253.6)
-
Step 600
600 (this color)
#497BB5
oklch(57.4% 0.105 253.2)
-
Step 700
700
#356397
oklch(49.2% 0.098 252.9)
-
Step 800
800
#2D517A
oklch(42.8% 0.08 252.9)
-
Step 900
900
#284362
oklch(37.6% 0.063 252.8)
-
Step 950
950
#18273A
oklch(26.9% 0.041 254.8)
#497BB5 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) | #637EB7 | 0.032 |
| Deuteranopia (no green cones) | #5474B4 | 0.021 |
| Tritanopia (no blue cones) | #008890 | 0.088 |
| Achromatopsia (no color) | #787878 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #497BB5
#497BB5
oklch(57.4% 0.105 253.2)
- #9E6E26
#9E6E26
oklch(57.5% 0.105 73.3)
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 #497BB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.020
- Windows Blue #3778BF ΔE 0.025
- Cool Blue #4984B8 ΔE 0.025
- Flat Blue #3C73A8 ΔE 0.032
- Off Blue #5684AE ΔE 0.035
- Nice Blue #107AB0 ΔE 0.038
- Cerulean #457B9D ΔE 0.039
- Dull Blue #49759C ΔE 0.039
Use #497BB5 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.