#455B8A
Closest named color: Denim Blue (#3B5B92). oklch(47.5% 0.081 264.4), rgb(69, 91, 138).
Aa
White text reads best on this color (6.73:1).
About this color
#455B8A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.081 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.017 away. White text reads best on it, at 6.73:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.11:1 |
| White text | 6.73:1 |
Values
| HEX | #455B8A |
| RGB | rgb(69, 91, 138) |
| HSL | hsl(221, 33%, 41%) |
| OKLCH | oklch(47.5% 0.081 264.4) |
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 #455B8A | 6.73:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #455B8A | 3.11:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #455B8A text on white | 6.73:1 | AA | Lc 83.1 | Fine for body text |
| #455B8A text on black | 3.11:1 | AA large text | Lc -18.8 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B4C1DB
oklch(80.9% 0.039 264.3)
-
Step 400
400
#8DA1C9
oklch(70.8% 0.063 264)
-
Step 500
500
#7189BB
oklch(63.1% 0.081 264.4)
-
Step 600
600
#5972A7
oklch(55.5% 0.088 264.4)
-
Step 700
700 (this color)
#455B8A
oklch(47.5% 0.081 264.4)
-
Step 800
800
#3C4E74
oklch(42.6% 0.068 264.4)
-
Step 900
900
#34415E
oklch(37.7% 0.053 265.4)
-
Step 950
950
#1E2637
oklch(26.9% 0.034 264.8)
#455B8A 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) | #495F8C | 0.013 |
| Deuteranopia (no green cones) | #425989 | 0.007 |
| Tritanopia (no blue cones) | #28656C | 0.073 |
| Achromatopsia (no color) | #5C5C5C | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455B8A
#455B8A
oklch(47.5% 0.081 264.4)
- #71581F
#71581F
oklch(47.4% 0.081 84.7)
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 #455B8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.017
- Dusky Blue #475F94 ΔE 0.018
- Dusk #4E5481 ΔE 0.024
- Denim #3B638C ΔE 0.024
- Light Navy Blue #2E5A88 ΔE 0.027
- Twilight #4E518B ΔE 0.030
- YInMn Blue #415A77 ΔE 0.032
- Dusty Grape #545775 ΔE 0.038
Use #455B8A 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.