#455F91
Closest named color: Dusky Blue (#475F94). oklch(48.8% 0.087 262.7), rgb(69, 95, 145).
Aa
White text reads best on this color (6.36:1).
About this color
#455F91 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.087 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.006 away. White text reads best on it, at 6.36:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.29:1 |
| White text | 6.36:1 |
Values
| HEX | #455F91 |
| RGB | rgb(69, 95, 145) |
| HSL | hsl(219, 36%, 42%) |
| OKLCH | oklch(48.8% 0.087 262.7) |
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 #455F91 | 6.36:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #455F91 | 3.29:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #455F91 text on white | 6.36:1 | AA | Lc 81.6 | Fine for body text |
| #455F91 text on black | 3.29:1 | AA large text | Lc -20.3 | 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
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D1D9E9
oklch(88.4% 0.024 264.4)
-
Step 300
300
#B2C1DC
oklch(80.8% 0.042 262.3)
-
Step 400
400
#8AA1CB
oklch(70.7% 0.067 262.3)
-
Step 500
500
#6E89BE
oklch(63.1% 0.086 263.3)
-
Step 600
600
#5673AA
oklch(55.7% 0.093 262.5)
-
Step 700
700 (this color)
#455F91
oklch(48.8% 0.087 262.7)
-
Step 800
800
#3A4E76
oklch(42.6% 0.071 263.4)
-
Step 900
900
#31415F
oklch(37.5% 0.056 262.5)
-
Step 950
950
#1D2638
oklch(26.9% 0.036 263.7)
#455F91 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) | #4C6393 | 0.016 |
| Deuteranopia (no green cones) | #435C90 | 0.009 |
| Tritanopia (no blue cones) | #216A71 | 0.078 |
| Achromatopsia (no color) | #5F5F5F | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455F91
#455F91
oklch(48.8% 0.087 262.7)
- #785B1C
#785B1C
oklch(48.9% 0.087 83)
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 #455F91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.006
- Denim Blue #3B5B92 ΔE 0.018
- Denim #3B638C ΔE 0.019
- Light Navy Blue #2E5A88 ΔE 0.034
- Dusk #4E5481 ΔE 0.036
- Twilight #4E518B ΔE 0.039
- YInMn Blue #415A77 ΔE 0.043
- Peacock Blue #016795 ΔE 0.046
Use #455F91 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.