#455C91
Closest named color: Dusky Blue (#475F94). oklch(48.1% 0.09 265.4), rgb(69, 92, 145).
Aa
White text reads best on this color (6.57:1).
About this color
#455C91 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.090 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.010 away. White text reads best on it, at 6.57:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.19:1 |
| White text | 6.57:1 |
Values
| HEX | #455C91 |
| RGB | rgb(69, 92, 145) |
| HSL | hsl(222, 36%, 42%) |
| OKLCH | oklch(48.1% 0.09 265.4) |
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 #455C91 | 6.57:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #455C91 | 3.19:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #455C91 text on white | 6.57:1 | AA | Lc 82.4 | Fine for body text |
| #455C91 text on black | 3.19:1 | 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
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B3C1DE
oklch(81% 0.044 264.9)
-
Step 400
400
#8CA0CD
oklch(70.7% 0.07 266)
-
Step 500
500
#6F88C0
oklch(63% 0.09 265.5)
-
Step 600
600
#5871AC
oklch(55.5% 0.097 265.9)
-
Step 700
700 (this color)
#455C91
oklch(48.1% 0.09 265.4)
-
Step 800
800
#3B4E78
oklch(42.8% 0.074 264.9)
-
Step 900
900
#334161
oklch(37.8% 0.058 265.6)
-
Step 950
950
#1E2639
oklch(27% 0.037 266.4)
#455C91 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) | #476193 | 0.015 |
| Deuteranopia (no green cones) | #3F5A90 | 0.010 |
| Tritanopia (no blue cones) | #22676F | 0.081 |
| Achromatopsia (no color) | #5D5D5D | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455C91
#455C91
oklch(48.1% 0.09 265.4)
- #755913
#755913
oklch(48% 0.09 85.1)
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 #455C91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.010
- Denim Blue #3B5B92 ΔE 0.013
- Denim #3B638C ΔE 0.026
- Dusk #4E5481 ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.032
- Twilight #4E518B ΔE 0.032
- YInMn Blue #415A77 ΔE 0.043
- Dusk Blue #26538D ΔE 0.046
Use #455C91 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.