#45509E
Closest named color: Twilight (#4E518B). oklch(46.3% 0.126 274.4), rgb(69, 80, 158).
Aa
White text reads best on this color (7.25:1).
About this color
#45509E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.126 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.034 away. White text reads best on it, at 7.25:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.89:1 |
| White text | 7.25:1 |
Values
| HEX | #45509E |
| RGB | rgb(69, 80, 158) |
| HSL | hsl(233, 39%, 45%) |
| OKLCH | oklch(46.3% 0.126 274.4) |
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 #45509E | 7.25:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #45509E | 2.89:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #45509E text on white | 7.25:1 | AAA | Lc 85.0 | Fine for body text |
| #45509E text on black | 2.89:1 | Fails | Lc -17.0 | 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 700.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F0
oklch(88.5% 0.034 274.5)
-
Step 300
300
#B4BEE9
oklch(80.8% 0.062 274.7)
-
Step 400
400
#8E9CDD
oklch(70.7% 0.097 274.3)
-
Step 500
500
#7382D4
oklch(63.1% 0.124 274.4)
-
Step 600
600
#5C6AC1
oklch(55.5% 0.135 274.3)
-
Step 700
700 (this color)
#45509E
oklch(46.3% 0.126 274.4)
-
Step 800
800
#3E4887
oklch(42.6% 0.104 274.3)
-
Step 900
900
#353D6C
oklch(37.7% 0.081 274.6)
-
Step 950
950
#1F243F
oklch(27% 0.051 274.5)
#45509E 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) | #2A5BA1 | 0.038 |
| Deuteranopia (no green cones) | #1E539C | 0.041 |
| Tritanopia (no blue cones) | #15616F | 0.111 |
| Achromatopsia (no color) | #575757 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45509E
#45509E
oklch(46.3% 0.126 274.4)
- #6A5700
#6A5700
oklch(46.2% 0.095 94.2)
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 #45509E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.034
- Blueberry #464196 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.040
- Dusk Blue #26538D ΔE 0.047
- Dusky Blue #475F94 ΔE 0.048
- Dusk #4E5481 ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.056
Use #45509E 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.