#497AA4
Closest named color: Cerulean (#457B9D). oklch(56.3% 0.084 245.9), rgb(73, 122, 164).
Aa
Black text reads best on this color (4.60:1).
About this color
#497AA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.084 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.013 away. Black text reads best on it, at 4.60:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.60:1 |
| White text | 4.56:1 |
Values
| HEX | #497AA4 |
| RGB | rgb(73, 122, 164) |
| HSL | hsl(208, 38%, 46%) |
| OKLCH | oklch(56.3% 0.084 245.9) |
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 #497AA4 | 4.56:1 | AA | Lc -77.0 | Fine for body text |
| Black text on #497AA4 | 4.60:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #497AA4 text on white | 4.56:1 | AA | Lc 71.6 | Content text, not long reading |
| #497AA4 text on black | 4.60:1 | AA | Lc -30.1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE7
oklch(88.5% 0.022 245.9)
-
Step 300
300
#ADC4D8
oklch(80.9% 0.038 244.5)
-
Step 400
400
#82A5C5
oklch(70.7% 0.061 246.4)
-
Step 500
500
#618EB6
oklch(63% 0.078 246.3)
-
Step 600
600 (this color)
#497AA4
oklch(56.3% 0.084 245.9)
-
Step 700
700
#38658B
oklch(49.2% 0.079 245.8)
-
Step 800
800
#2F5271
oklch(42.6% 0.066 246.8)
-
Step 900
900
#2A445B
oklch(37.6% 0.051 246.3)
-
Step 950
950
#192835
oklch(27% 0.032 245.5)
#497AA4 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) | #687BA6 | 0.037 |
| Deuteranopia (no green cones) | #5C72A3 | 0.029 |
| Tritanopia (no blue cones) | #088488 | 0.072 |
| Achromatopsia (no color) | #767676 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #497AA4
#497AA4
oklch(56.3% 0.084 245.9)
- #976B3C
#976B3C
oklch(56.3% 0.085 66.4)
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 #497AA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.013
- Stormy Blue #507B9C ΔE 0.015
- Dull Blue #49759C ΔE 0.017
- Flat Blue #3C73A8 ΔE 0.027
- Steel Blue #4682B4 ΔE 0.029
- Muted Blue #3B719F ΔE 0.032
- Off Blue #5684AE ΔE 0.035
- Metallic Blue #4F738E ΔE 0.035
Use #497AA4 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.