#455183
Closest named color: Dusk (#4E5481). oklch(44.8% 0.083 272.4), rgb(69, 81, 131).
Aa
White text reads best on this color (7.61:1).
About this color
#455183 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.083 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.017 away. White text reads best on it, at 7.61:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.75:1 |
| White text | 7.61:1 |
Values
| HEX | #455183 |
| RGB | rgb(69, 81, 131) |
| HSL | hsl(228, 31%, 39%) |
| OKLCH | oklch(44.8% 0.083 272.4) |
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 #455183 | 7.61:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #455183 | 2.75:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #455183 text on white | 7.61:1 | AAA | Lc 86.4 | Fine for body text |
| #455183 text on black | 2.75:1 | Fails | Lc -15.7 | 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 800.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D3D8EC
oklch(88.4% 0.028 274.6)
-
Step 300
300
#B5BFE1
oklch(80.8% 0.049 272.4)
-
Step 400
400
#909ED2
oklch(70.7% 0.078 272.6)
-
Step 500
500
#7585C6
oklch(63.1% 0.1 272.7)
-
Step 600
600
#5E6EB3
oklch(55.6% 0.109 272.5)
-
Step 700
700
#4D5C9A
oklch(49.2% 0.101 272)
-
Step 800
800 (this color)
#455183
oklch(44.8% 0.083 272.4)
-
Step 900
900
#363F64
oklch(37.7% 0.065 272.6)
-
Step 950
950
#1F253B
oklch(27% 0.042 271.7)
#455183 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) | #3F5685 | 0.015 |
| Deuteranopia (no green cones) | #395182 | 0.016 |
| Tritanopia (no blue cones) | #2E5B64 | 0.073 |
| Achromatopsia (no color) | #545454 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455183
#455183
oklch(44.8% 0.083 272.4)
- #655312
#655312
oklch(44.8% 0.083 92.6)
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 #455183, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.017
- Twilight #4E518B ΔE 0.019
- Light Navy Blue #2E5A88 ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.034
- Dusk Blue #26538D ΔE 0.037
- YInMn Blue #415A77 ΔE 0.038
- Dusty Grape #545775 ΔE 0.040
- Dusky Blue #475F94 ΔE 0.045
Use #455183 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.