#497CB0
Closest named color: Steel Blue (#4682B4). oklch(57.3% 0.098 250.3), rgb(73, 124, 176).
Aa
Black text reads best on this color (4.79:1).
About this color
#497CB0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.098 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.017 away. Black text reads best on it, at 4.79:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.79:1 |
| White text | 4.38:1 |
Values
| HEX | #497CB0 |
| RGB | rgb(73, 124, 176) |
| HSL | hsl(210, 41%, 49%) |
| OKLCH | oklch(57.3% 0.098 250.3) |
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 #497CB0 | 4.38:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #497CB0 | 4.79:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #497CB0 text on white | 4.38:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #497CB0 text on black | 4.79:1 | AA | Lc -31.5 | 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
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300
#ACC3DD
oklch(80.8% 0.045 251.6)
-
Step 400
400
#7FA4CB
oklch(70.6% 0.07 250.2)
-
Step 500
500
#5E8DBE
oklch(63% 0.09 250.4)
-
Step 600
600 (this color)
#497CB0
oklch(57.3% 0.098 250.3)
-
Step 700
700
#356492
oklch(49.1% 0.09 249.7)
-
Step 800
800
#2D5177
oklch(42.6% 0.076 251.2)
-
Step 900
900
#284460
oklch(37.8% 0.059 249.6)
-
Step 950
950
#182838
oklch(27.1% 0.037 249.3)
#497CB0 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) | #667EB2 | 0.035 |
| Deuteranopia (no green cones) | #5974AF | 0.026 |
| Tritanopia (no blue cones) | #00888E | 0.082 |
| Achromatopsia (no color) | #797979 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #497CB0
#497CB0
oklch(57.3% 0.098 250.3)
- #9D6D30
#9D6D30
oklch(57.3% 0.098 69.9)
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 #497CB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.017
- Cool Blue #4984B8 ΔE 0.023
- Off Blue #5684AE ΔE 0.029
- Cerulean #457B9D ΔE 0.030
- Stormy Blue #507B9C ΔE 0.031
- Flat Blue #3C73A8 ΔE 0.031
- Windows Blue #3778BF ΔE 0.032
- Dull Blue #49759C ΔE 0.033
Use #497CB0 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.