#45599B
Closest named color: Denim Blue (#3B5B92). oklch(48% 0.109 269.3), rgb(69, 89, 155).
Aa
White text reads best on this color (6.65:1).
About this color
#45599B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.109 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.021 away. White text reads best on it, at 6.65:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.15:1 |
| White text | 6.65:1 |
Values
| HEX | #45599B |
| RGB | rgb(69, 89, 155) |
| HSL | hsl(226, 38%, 44%) |
| OKLCH | oklch(48% 0.109 269.3) |
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 #45599B | 6.65:1 | AA | Lc -87.8 | Fine for body text |
| Black text on #45599B | 3.15:1 | AA large text | Lc 21.3 | Dividers and decoration only |
| #45599B text on white | 6.65:1 | AA | Lc 82.7 | Fine for body text |
| #45599B text on black | 3.15:1 | AA large text | Lc -19.2 | 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 700.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D1D9ED
oklch(88.5% 0.029 268.3)
-
Step 300
300
#B3C0E4
oklch(81% 0.053 269.6)
-
Step 400
400
#8B9FD6
oklch(70.8% 0.084 268.8)
-
Step 500
500
#6F86CB
oklch(63.1% 0.108 269.2)
-
Step 600
600
#586EB8
oklch(55.5% 0.118 269.8)
-
Step 700
700 (this color)
#45599B
oklch(48% 0.109 269.3)
-
Step 800
800
#3B4B80
oklch(42.6% 0.09 269.6)
-
Step 900
900
#323F67
oklch(37.6% 0.071 269.2)
-
Step 950
950
#1E253C
oklch(27% 0.044 270.3)
#45599B 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) | #3D609E | 0.020 |
| Deuteranopia (no green cones) | #33599A | 0.021 |
| Tritanopia (no blue cones) | #176772 | 0.097 |
| Achromatopsia (no color) | #5C5C5C | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45599B
#45599B
oklch(48% 0.109 269.3)
- #745A00
#745A00
oklch(48.1% 0.098 89.1)
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 #45599B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.021
- Dusky Blue #475F94 ΔE 0.023
- Twilight #4E518B ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.042
- Dusk #4E5481 ΔE 0.043
- Denim #3B638C ΔE 0.043
- Dusk Blue #26538D ΔE 0.046
- French Blue #436BAD ΔE 0.053
Use #45599B 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.