#455AAA
Closest named color: Dusky Blue (#475F94). oklch(49.2% 0.13 270), rgb(69, 90, 170).
Aa
White text reads best on this color (6.37:1).
About this color
#455AAA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.130 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.041 away. White text reads best on it, at 6.37:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.29:1 |
| White text | 6.37:1 |
Values
| HEX | #455AAA |
| RGB | rgb(69, 90, 170) |
| HSL | hsl(228, 42%, 47%) |
| OKLCH | oklch(49.2% 0.13 270) |
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 #455AAA | 6.37:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #455AAA | 3.29:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #455AAA text on white | 6.37:1 | AA | Lc 81.5 | Fine for body text |
| #455AAA text on black | 3.29:1 | AA large text | Lc -20.4 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F1
oklch(88.6% 0.034 269.3)
-
Step 300
300
#B1BFEA
oklch(80.8% 0.063 270.8)
-
Step 400
400
#889DE0
oklch(70.6% 0.101 270.3)
-
Step 500
500
#6B84D7
oklch(63.1% 0.128 269.8)
-
Step 600
600
#546CC4
oklch(55.6% 0.139 269.9)
-
Step 700
700 (this color)
#455AAA
oklch(49.2% 0.13 270)
-
Step 800
800
#384A89
oklch(42.7% 0.107 269.5)
-
Step 900
900
#303E6E
oklch(37.7% 0.084 269.8)
-
Step 950
950
#1C2540
oklch(27.1% 0.052 268.8)
#455AAA 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) | #3464AD | 0.030 |
| Deuteranopia (no green cones) | #255BA8 | 0.032 |
| Tritanopia (no blue cones) | #006C7A | 0.114 |
| Achromatopsia (no color) | #5F5F5F | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455AAA
#455AAA
oklch(49.2% 0.13 270)
- #775E00
#775E00
oklch(49.3% 0.101 90.6)
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 #455AAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.042
- French Blue #436BAD ΔE 0.046
- Mid Blue #276AB3 ΔE 0.047
- Twilight #4E518B ΔE 0.052
- Iris #6258C4 ΔE 0.059
- Denim #3B638C ΔE 0.061
- Dusk Blue #26538D ΔE 0.063
Use #455AAA 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.