#497DA3
Closest named color: Cerulean (#457B9D). oklch(56.9% 0.081 241.8), rgb(73, 125, 163).
Aa
Black text reads best on this color (4.74:1).
About this color
#497DA3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.081 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.011 away. Black text reads best on it, at 4.74:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.74:1 |
| White text | 4.42:1 |
Values
| HEX | #497DA3 |
| RGB | rgb(73, 125, 163) |
| HSL | hsl(205, 38%, 46%) |
| OKLCH | oklch(56.9% 0.081 241.8) |
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 #497DA3 | 4.42:1 | AA large text | Lc -76.0 | Fine for body text |
| Black text on #497DA3 | 4.74:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #497DA3 text on white | 4.42:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #497DA3 text on black | 4.74:1 | AA | Lc -31.1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE6
oklch(88.5% 0.021 243.4)
-
Step 300
300
#ADC4D7
oklch(80.9% 0.037 243.1)
-
Step 400
400
#81A6C2
oklch(70.8% 0.058 241.3)
-
Step 500
500
#608FB3
oklch(63.1% 0.075 242.3)
-
Step 600
600 (this color)
#497DA3
oklch(56.9% 0.081 241.8)
-
Step 700
700
#366688
oklch(49.2% 0.076 241.4)
-
Step 800
800
#2E536E
oklch(42.7% 0.062 241.9)
-
Step 900
900
#294559
oklch(37.7% 0.048 240.8)
-
Step 950
950
#192834
oklch(26.9% 0.03 243.3)
#497DA3 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) | #6C7DA5 | 0.042 |
| Deuteranopia (no green cones) | #6074A2 | 0.034 |
| Tritanopia (no blue cones) | #08868A | 0.066 |
| Achromatopsia (no color) | #787878 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #497DA3
#497DA3
oklch(56.9% 0.081 241.8)
- #9A6C43
#9A6C43
oklch(57% 0.082 61.7)
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 #497DA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.011
- Stormy Blue #507B9C ΔE 0.012
- Dull Blue #49759C ΔE 0.023
- Steel Blue #4682B4 ΔE 0.027
- Off Blue #5684AE ΔE 0.029
- Cool Blue #4984B8 ΔE 0.034
- Dusty Blue #5A86AD ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.036
Use #497DA3 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.