#497DB0
Closest named color: Steel Blue (#4682B4). oklch(57.6% 0.097 249.4), rgb(73, 125, 176).
Aa
Black text reads best on this color (4.84:1).
About this color
#497DB0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.097 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.014 away. Black text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.84:1 |
| White text | 4.33:1 |
Values
| HEX | #497DB0 |
| RGB | rgb(73, 125, 176) |
| HSL | hsl(210, 41%, 49%) |
| OKLCH | oklch(57.6% 0.097 249.4) |
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 #497DB0 | 4.33:1 | AA large text | Lc -75.3 | Fine for body text |
| Black text on #497DB0 | 4.84:1 | AA | Lc 34.2 | Non-text elements, placeholder text |
| #497DB0 text on white | 4.33:1 | AA large text | Lc 69.9 | Content text, not long reading |
| #497DB0 text on black | 4.84:1 | AA | Lc -31.8 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CDDBE9
oklch(88.5% 0.025 248.1)
-
Step 300
300
#ACC4DC
oklch(81% 0.043 248.4)
-
Step 400
400
#7FA5CB
oklch(70.8% 0.07 248.8)
-
Step 500
500
#5E8EBD
oklch(63.2% 0.088 248.9)
-
Step 600
600 (this color)
#497DB0
oklch(57.6% 0.097 249.4)
-
Step 700
700
#356492
oklch(49.1% 0.09 249.7)
-
Step 800
800
#2C5276
oklch(42.8% 0.074 248.8)
-
Step 900
900
#28445F
oklch(37.7% 0.058 248.7)
-
Step 950
950
#182838
oklch(27.1% 0.037 249.3)
#497DB0 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) | #687FB2 | 0.037 |
| Deuteranopia (no green cones) | #5A75AF | 0.027 |
| Tritanopia (no blue cones) | #00898F | 0.081 |
| Achromatopsia (no color) | #797979 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #497DB0
#497DB0
oklch(57.6% 0.097 249.4)
- #9E6E33
#9E6E33
oklch(57.6% 0.097 69.3)
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 #497DB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.014
- Cool Blue #4984B8 ΔE 0.021
- Off Blue #5684AE ΔE 0.027
- Cerulean #457B9D ΔE 0.030
- Stormy Blue #507B9C ΔE 0.031
- Flat Blue #3C73A8 ΔE 0.034
- Windows Blue #3778BF ΔE 0.034
- Dull Blue #49759C ΔE 0.034
Use #497DB0 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.