#455B8F
Closest named color: Denim Blue (#3B5B92). oklch(47.8% 0.089 265.8), rgb(69, 91, 143).
Aa
White text reads best on this color (6.67:1).
About this color
#455B8F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.089 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.013 away. White text reads best on it, at 6.67:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.14:1 |
| White text | 6.67:1 |
Values
| HEX | #455B8F |
| RGB | rgb(69, 91, 143) |
| HSL | hsl(222, 35%, 42%) |
| OKLCH | oklch(47.8% 0.089 265.8) |
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 #455B8F | 6.67:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #455B8F | 3.14:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #455B8F text on white | 6.67:1 | AA | Lc 82.9 | Fine for body text |
| #455B8F text on black | 3.14:1 | AA large text | Lc -19.1 | 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
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E9
oklch(88.5% 0.023 266.9)
-
Step 300
300
#B4C1DD
oklch(81% 0.042 265.7)
-
Step 400
400
#8CA0CC
oklch(70.6% 0.069 265.6)
-
Step 500
500
#7088BF
oklch(63% 0.088 265.8)
-
Step 600
600
#5971AB
oklch(55.5% 0.095 266.3)
-
Step 700
700 (this color)
#455B8F
oklch(47.8% 0.089 265.8)
-
Step 800
800
#3C4E77
oklch(42.8% 0.072 265.4)
-
Step 900
900
#334160
oklch(37.7% 0.057 265.2)
-
Step 950
950
#1E2638
oklch(27% 0.036 265.6)
#455B8F 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) | #476091 | 0.015 |
| Deuteranopia (no green cones) | #3F598E | 0.010 |
| Tritanopia (no blue cones) | #24666E | 0.079 |
| Achromatopsia (no color) | #5C5C5C | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455B8F
#455B8F
oklch(47.8% 0.089 265.8)
- #735915
#735915
oklch(47.8% 0.089 86.4)
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 #455B8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.013
- Dusky Blue #475F94 ΔE 0.013
- Denim #3B638C ΔE 0.027
- Dusk #4E5481 ΔE 0.028
- Twilight #4E518B ΔE 0.029
- Light Navy Blue #2E5A88 ΔE 0.030
- YInMn Blue #415A77 ΔE 0.040
- Dusk Blue #26538D ΔE 0.044
Use #455B8F 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.