#455D8D
Closest named color: Dusky Blue (#475F94). oklch(48.1% 0.083 263.3), rgb(69, 93, 141).
Aa
White text reads best on this color (6.55:1).
About this color
#455D8D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.083 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.012 away. White text reads best on it, at 6.55:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.20:1 |
| White text | 6.55:1 |
Values
| HEX | #455D8D |
| RGB | rgb(69, 93, 141) |
| HSL | hsl(220, 34%, 41%) |
| OKLCH | oklch(48.1% 0.083 263.3) |
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 #455D8D | 6.55:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #455D8D | 3.20:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #455D8D text on white | 6.55:1 | AA | Lc 82.4 | Fine for body text |
| #455D8D text on black | 3.20:1 | AA large text | Lc -19.5 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1D9E8
oklch(88.4% 0.022 263.2)
-
Step 300
300
#B3C1DB
oklch(80.9% 0.04 262.9)
-
Step 400
400
#8CA1CA
oklch(70.8% 0.065 263.6)
-
Step 500
500
#6F89BC
oklch(63% 0.083 263.4)
-
Step 600
600
#5873A8
oklch(55.7% 0.089 263.2)
-
Step 700
700 (this color)
#455D8D
oklch(48.1% 0.083 263.3)
-
Step 800
800
#3B4E75
oklch(42.6% 0.069 263.9)
-
Step 900
900
#33415E
oklch(37.6% 0.053 264.2)
-
Step 950
950
#1E2637
oklch(26.9% 0.034 264.8)
#455D8D 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) | #4B618F | 0.015 |
| Deuteranopia (no green cones) | #435A8C | 0.009 |
| Tritanopia (no blue cones) | #25676E | 0.075 |
| Achromatopsia (no color) | #5D5D5D | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455D8D
#455D8D
oklch(48.1% 0.083 263.3)
- #74591E
#74591E
oklch(48% 0.083 83.5)
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 #455D8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.012
- Denim Blue #3B5B92 ΔE 0.017
- Denim #3B638C ΔE 0.020
- Dusk #4E5481 ΔE 0.030
- Light Navy Blue #2E5A88 ΔE 0.030
- Twilight #4E518B ΔE 0.035
- YInMn Blue #415A77 ΔE 0.036
- Dusty Grape #545775 ΔE 0.042
Use #455D8D 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.