#40557D
Closest named color: YInMn Blue (#415A77). oklch(45% 0.071 262.7), rgb(64, 85, 125).
Aa
White text reads best on this color (7.46:1).
About this color
#40557D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.071 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.021 away. White text reads best on it, at 7.46:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.81:1 |
| White text | 7.46:1 |
Values
| HEX | #40557D |
| RGB | rgb(64, 85, 125) |
| HSL | hsl(219, 32%, 37%) |
| OKLCH | oklch(45% 0.071 262.7) |
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 #40557D | 7.46:1 | AAA | Lc -90.7 | Preferred for body text |
| Black text on #40557D | 2.81:1 | Fails | Lc 18.2 | Dividers and decoration only |
| #40557D text on white | 7.46:1 | AAA | Lc 85.9 | Fine for body text |
| #40557D text on black | 2.81:1 | Fails | Lc -16.2 | 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 800.
-
Step 50
50
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1D9E9
oklch(88.4% 0.024 264.4)
-
Step 300
300
#B2C1DC
oklch(80.8% 0.042 262.3)
-
Step 400
400
#8BA1CB
oklch(70.7% 0.067 263.2)
-
Step 500
500
#6E89BD
oklch(63% 0.085 263)
-
Step 600
600
#5673A9
oklch(55.7% 0.091 262.2)
-
Step 700
700
#466091
oklch(49.1% 0.085 262.4)
-
Step 800
800 (this color)
#40557D
oklch(45% 0.071 262.7)
-
Step 900
900
#32415F
oklch(37.6% 0.055 263.6)
-
Step 950
950
#1D2638
oklch(26.9% 0.036 263.7)
#40557D 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) | #46587F | 0.013 |
| Deuteranopia (no green cones) | #3F527C | 0.009 |
| Tritanopia (no blue cones) | #275E63 | 0.065 |
| Achromatopsia (no color) | #555555 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40557D
#40557D
oklch(45% 0.071 262.7)
- #695123
#695123
oklch(45% 0.071 81.5)
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 #40557D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.021
- Dusk #4E5481 ΔE 0.021
- Light Navy Blue #2E5A88 ΔE 0.026
- Dusty Grape #545775 ΔE 0.032
- Twilight #4E518B ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.035
- Dusk Blue #26538D ΔE 0.039
- Denim #3B638C ΔE 0.043
Use #40557D 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.