#45538D
Closest named color: Twilight (#4E518B). oklch(45.9% 0.096 271.9), rgb(69, 83, 141).
Aa
White text reads best on this color (7.30:1).
About this color
#45538D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.096 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.013 away. White text reads best on it, at 7.30:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #45538D |
| RGB | rgb(69, 83, 141) |
| HSL | hsl(228, 34%, 41%) |
| OKLCH | oklch(45.9% 0.096 271.9) |
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 #45538D | 7.30:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #45538D | 2.87:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #45538D text on white | 7.30:1 | AAA | Lc 85.3 | Fine for body text |
| #45538D text on black | 2.87:1 | Fails | Lc -16.8 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D2D8EE
oklch(88.4% 0.031 273.6)
-
Step 300
300
#B3BFE6
oklch(80.8% 0.057 271.7)
-
Step 400
400
#8D9DD9
oklch(70.6% 0.09 272.4)
-
Step 500
500
#7184CF
oklch(63.1% 0.115 272)
-
Step 600
600
#5A6DBC
oklch(55.7% 0.124 271.6)
-
Step 700
700
#4A5AA2
oklch(49% 0.117 272)
-
Step 800
800 (this color)
#45538D
oklch(45.9% 0.096 271.9)
-
Step 900
900
#343E69
oklch(37.6% 0.075 272.4)
-
Step 950
950
#1E253E
oklch(27.1% 0.048 271.1)
#45538D 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) | #3C5A8F | 0.021 |
| Deuteranopia (no green cones) | #35538C | 0.020 |
| Tritanopia (no blue cones) | #275F69 | 0.085 |
| Achromatopsia (no color) | #565656 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45538D
#45538D
oklch(45.9% 0.096 271.9)
- #6B5500
#6B5500
oklch(45.9% 0.094 91.4)
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 #45538D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.013
- Dusk #4E5481 ΔE 0.024
- Denim Blue #3B5B92 ΔE 0.024
- Light Navy Blue #2E5A88 ΔE 0.034
- Dusky Blue #475F94 ΔE 0.035
- Dusk Blue #26538D ΔE 0.035
- YInMn Blue #415A77 ΔE 0.047
- Denim #3B638C ΔE 0.047
Use #45538D 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.