#497CB8
Closest named color: Steel Blue (#4682B4). oklch(57.8% 0.108 253.6), rgb(73, 124, 184).
Aa
Black text reads best on this color (4.85:1).
About this color
#497CB8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.108 and its hue 254°. 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 4.85:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #497CB8 |
| RGB | rgb(73, 124, 184) |
| HSL | hsl(212, 44%, 50%) |
| OKLCH | oklch(57.8% 0.108 253.6) |
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 #497CB8 | 4.32:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #497CB8 | 4.85:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #497CB8 text on white | 4.32:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #497CB8 text on black | 4.85:1 | AA | Lc -31.9 | 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
#ABC3E0
oklch(80.9% 0.049 253.3)
-
Step 400
400
#7EA4D1
oklch(70.8% 0.078 253.1)
-
Step 500
500
#5D8CC4
oklch(63% 0.099 253.5)
-
Step 600
600 (this color)
#497CB8
oklch(57.8% 0.108 253.6)
-
Step 700
700
#346298
oklch(49% 0.101 253.8)
-
Step 800
800
#2C517B
oklch(42.8% 0.082 252.9)
-
Step 900
900
#284363
oklch(37.7% 0.064 253.6)
-
Step 950
950
#18273A
oklch(26.9% 0.041 254.8)
#497CB8 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) | #637FBB | 0.032 |
| Deuteranopia (no green cones) | #5475B7 | 0.021 |
| Tritanopia (no blue cones) | #008A92 | 0.090 |
| Achromatopsia (no color) | #7A7A7A | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #497CB8
#497CB8
oklch(57.8% 0.108 253.6)
- #A06F23
#A06F23
oklch(57.9% 0.108 73.7)
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 #497CB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.020
- Cool Blue #4984B8 ΔE 0.023
- Windows Blue #3778BF ΔE 0.024
- Off Blue #5684AE ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.037
- Nice Blue #107AB0 ΔE 0.040
- Dusty Blue #5A86AD ΔE 0.042
- Cerulean #457B9D ΔE 0.043
Use #497CB8 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.