#497FAC
Closest named color: Steel Blue (#4682B4). oklch(57.8% 0.09 245.4), rgb(73, 127, 172).
Aa
Black text reads best on this color (4.91:1).
About this color
#497FAC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.090 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.013 away. Black text reads best on it, at 4.91:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #497FAC |
| RGB | rgb(73, 127, 172) |
| HSL | hsl(207, 40%, 48%) |
| OKLCH | oklch(57.8% 0.09 245.4) |
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 #497FAC | 4.27:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #497FAC | 4.91:1 | AA | Lc 34.7 | Non-text elements, placeholder text |
| #497FAC text on white | 4.27:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #497FAC text on black | 4.91:1 | AA | Lc -32.3 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#ACC4DA
oklch(80.9% 0.041 246)
-
Step 400
400
#7FA5C7
oklch(70.6% 0.065 245.9)
-
Step 500
500
#5D8FB9
oklch(63.2% 0.083 245)
-
Step 600
600 (this color)
#497FAC
oklch(57.8% 0.09 245.4)
-
Step 700
700
#34658D
oklch(49.1% 0.084 245.3)
-
Step 800
800
#2C5373
oklch(42.8% 0.069 245.2)
-
Step 900
900
#28445D
oklch(37.6% 0.055 246.8)
-
Step 950
950
#182836
oklch(27% 0.034 245.9)
#497FAC 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) | #6C80AE | 0.041 |
| Deuteranopia (no green cones) | #5E76AB | 0.032 |
| Tritanopia (no blue cones) | #008A8E | 0.075 |
| Achromatopsia (no color) | #7A7A7A | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #497FAC
#497FAC
oklch(57.8% 0.09 245.4)
- #9E6E3C
#9E6E3C
oklch(57.7% 0.09 65.5)
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 #497FAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.013
- Cool Blue #4984B8 ΔE 0.021
- Off Blue #5684AE ΔE 0.021
- Stormy Blue #507B9C ΔE 0.025
- Cerulean #457B9D ΔE 0.025
- Dusty Blue #5A86AD ΔE 0.029
- Dull Blue #49759C ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.038
Use #497FAC 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.