#5F73AE
Closest named color: Flat Blue (#3C73A8). oklch(56.5% 0.095 269), rgb(95, 115, 174).
Aa
White text reads best on this color (4.61:1).
About this color
#5F73AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.095 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.041 away. White text reads best on it, at 4.61:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.55:1 |
| White text | 4.61:1 |
Values
| HEX | #5F73AE |
| RGB | rgb(95, 115, 174) |
| HSL | hsl(225, 33%, 53%) |
| OKLCH | oklch(56.5% 0.095 269) |
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 #5F73AE | 4.61:1 | AA | Lc -77.4 | Fine for body text |
| Black text on #5F73AE | 4.55:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #5F73AE text on white | 4.61:1 | AA | Lc 72.0 | Content text, not long reading |
| #5F73AE text on black | 4.55:1 | AA | Lc -29.7 | Dividers and decoration only |
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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D3D9E9
oklch(88.6% 0.023 269.4)
-
Step 300
300
#B5C0DD
oklch(80.9% 0.043 269)
-
Step 400
400
#8F9FCC
oklch(70.6% 0.069 269.4)
-
Step 500
500
#7487BF
oklch(63.1% 0.088 269.4)
-
Step 600
600 (this color)
#5F73AE
oklch(56.5% 0.095 269)
-
Step 700
700
#4C5E93
oklch(49.1% 0.088 268.8)
-
Step 800
800
#3E4D77
oklch(42.7% 0.073 268.3)
-
Step 900
900
#354060
oklch(37.7% 0.057 269.1)
-
Step 950
950
#1F2638
oklch(27.1% 0.035 267.7)
#5F73AE 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) | #5E79B0 | 0.016 |
| Deuteranopia (no green cones) | #5672AD | 0.012 |
| Tritanopia (no blue cones) | #427F88 | 0.085 |
| Achromatopsia (no color) | #757575 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F73AE
#5F73AE
oklch(56.5% 0.095 269)
- #8C732B
#8C732B
oklch(56.5% 0.095 89.7)
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 #5F73AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.041
- Dull Blue #49759C ΔE 0.041
- French Blue #436BAD ΔE 0.043
- Stormy Blue #507B9C ΔE 0.045
- Steel Blue #4682B4 ΔE 0.046
- Windows Blue #3778BF ΔE 0.046
- Off Blue #5684AE ΔE 0.048
- Cool Blue #4984B8 ΔE 0.049
Use #5F73AE 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.