#445B88
Closest named color: Denim Blue (#3B5B92). oklch(47.3% 0.079 263), rgb(68, 91, 136).
Aa
White text reads best on this color (6.77:1).
About this color
#445B88 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.079 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.019 away. White text reads best on it, at 6.77:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.09:1 |
| White text | 6.77:1 |
Values
| HEX | #445B88 |
| RGB | rgb(68, 91, 136) |
| HSL | hsl(220, 33%, 40%) |
| OKLCH | oklch(47.3% 0.079 263) |
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 #445B88 | 6.77:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #445B88 | 3.09:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #445B88 text on white | 6.77:1 | AA | Lc 83.3 | Fine for body text |
| #445B88 text on black | 3.09:1 | AA large text | Lc -18.6 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B4C1DA
oklch(80.9% 0.038 263.6)
-
Step 400
400
#8DA1C7
oklch(70.7% 0.06 263.1)
-
Step 500
500
#7189B9
oklch(63% 0.078 263.8)
-
Step 600
600
#5973A5
oklch(55.6% 0.084 262.9)
-
Step 700
700 (this color)
#445B88
oklch(47.3% 0.079 263)
-
Step 800
800
#3C4F73
oklch(42.8% 0.065 262.6)
-
Step 900
900
#33415D
oklch(37.6% 0.052 263.7)
-
Step 950
950
#1E2636
oklch(26.9% 0.032 263.8)
#445B88 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) | #4A5F8A | 0.015 |
| Deuteranopia (no green cones) | #425887 | 0.009 |
| Tritanopia (no blue cones) | #27656B | 0.071 |
| Achromatopsia (no color) | #5B5B5B | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #445B88
#445B88
oklch(47.3% 0.079 263)
- #715721
#715721
oklch(47.2% 0.079 82.8)
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 #445B88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.019
- Dusky Blue #475F94 ΔE 0.021
- Dusk #4E5481 ΔE 0.023
- Denim #3B638C ΔE 0.024
- Light Navy Blue #2E5A88 ΔE 0.025
- YInMn Blue #415A77 ΔE 0.028
- Twilight #4E518B ΔE 0.032
- Dusty Grape #545775 ΔE 0.036
Use #445B88 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.