#455191
Closest named color: Twilight (#4E518B). oklch(45.7% 0.105 273.5), rgb(69, 81, 145).
Aa
White text reads best on this color (7.39:1).
About this color
#455191 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.105 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.016 away. White text reads best on it, at 7.39:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.83:1 |
| White text | 7.39:1 |
Values
| HEX | #455191 |
| RGB | rgb(69, 81, 145) |
| HSL | hsl(231, 36%, 42%) |
| OKLCH | oklch(45.7% 0.105 273.5) |
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 #455191 | 7.39:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #455191 | 2.83:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #455191 text on white | 7.39:1 | AAA | Lc 85.6 | Fine for body text |
| #455191 text on black | 2.83:1 | Fails | Lc -16.5 | 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 800.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F0
oklch(88.5% 0.034 274.5)
-
Step 300
300
#B3BFE9
oklch(81% 0.061 272.5)
-
Step 400
400
#8D9CDE
oklch(70.7% 0.098 273.8)
-
Step 500
500
#7282D5
oklch(63% 0.126 274)
-
Step 600
600
#5B6BC2
oklch(55.7% 0.135 273.4)
-
Step 700
700
#4B58A8
oklch(49.1% 0.128 273.8)
-
Step 800
800 (this color)
#455191
oklch(45.7% 0.105 273.5)
-
Step 900
900
#343D6D
oklch(37.7% 0.083 273.8)
-
Step 950
950
#1E2440
oklch(27% 0.053 273.2)
#455191 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) | #375993 | 0.026 |
| Deuteranopia (no green cones) | #2F5290 | 0.027 |
| Tritanopia (no blue cones) | #245F6A | 0.093 |
| Achromatopsia (no color) | #555555 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455191
#455191
oklch(45.7% 0.105 273.5)
- #695500
#695500
oklch(45.6% 0.093 93)
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 #455191, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.016
- Denim Blue #3B5B92 ΔE 0.029
- Dusk #4E5481 ΔE 0.032
- Dusk Blue #26538D ΔE 0.036
- Dusky Blue #475F94 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.040
- Blueberry #464196 ΔE 0.045
- Dark Slate Blue #483D8B ΔE 0.053
Use #455191 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.