#45579B
Closest named color: Denim Blue (#3B5B92). oklch(47.6% 0.112 270.5), rgb(69, 87, 155).
Aa
White text reads best on this color (6.79:1).
About this color
#45579B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.112 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.023 away. White text reads best on it, at 6.79:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.08:1 |
| White text | 6.79:1 |
Values
| HEX | #45579B |
| RGB | rgb(69, 87, 155) |
| HSL | hsl(227, 38%, 44%) |
| OKLCH | oklch(47.6% 0.112 270.5) |
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 #45579B | 6.79:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #45579B | 3.08:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #45579B text on white | 6.79:1 | AA | Lc 83.3 | Fine for body text |
| #45579B text on black | 3.08:1 | AA large text | Lc -18.7 | 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 700.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF5
oklch(93.7% 0.015 270)
-
Step 200
200
#D1D9EE
oklch(88.6% 0.03 269.1)
-
Step 300
300
#B3C0E4
oklch(81% 0.053 269.6)
-
Step 400
400
#8C9ED7
oklch(70.7% 0.086 270.6)
-
Step 500
500
#7085CD
oklch(63.1% 0.111 270.6)
-
Step 600
600
#596EB9
oklch(55.6% 0.119 270.4)
-
Step 700
700 (this color)
#45579B
oklch(47.6% 0.112 270.5)
-
Step 800
800
#3C4B81
oklch(42.7% 0.092 270.4)
-
Step 900
900
#333F68
oklch(37.7% 0.072 270.3)
-
Step 950
950
#1E253D
oklch(27% 0.046 270.7)
#45579B 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) | #3A5F9E | 0.024 |
| Deuteranopia (no green cones) | #30579A | 0.024 |
| Tritanopia (no blue cones) | #176671 | 0.101 |
| Achromatopsia (no color) | #5B5B5B | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45579B
#45579B
oklch(47.6% 0.112 270.5)
- #715900
#715900
oklch(47.5% 0.097 90.5)
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 #45579B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.023
- Dusky Blue #475F94 ΔE 0.028
- Twilight #4E518B ΔE 0.029
- Dusk #4E5481 ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.044
- Dusk Blue #26538D ΔE 0.045
- Denim #3B638C ΔE 0.047
- French Blue #436BAD ΔE 0.058
Use #45579B 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.