#404B87
Closest named color: Twilight (#4E518B). oklch(43.4% 0.1 273.7), rgb(64, 75, 135).
Aa
White text reads best on this color (8.15:1).
About this color
#404B87 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.100 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.029 away. White text reads best on it, at 8.15:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.57:1 |
| White text | 8.15:1 |
Values
| HEX | #404B87 |
| RGB | rgb(64, 75, 135) |
| HSL | hsl(231, 36%, 39%) |
| OKLCH | oklch(43.4% 0.1 273.7) |
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 #404B87 | 8.15:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #404B87 | 2.57:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #404B87 text on white | 8.15:1 | AAA | Lc 88.1 | Fine for body text |
| #404B87 text on black | 2.57:1 | Fails | Lc -14.1 | Not readable |
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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8EF
oklch(88.5% 0.032 274.1)
-
Step 300
300
#B4BFE7
oklch(81% 0.058 273)
-
Step 400
400
#8E9DDB
oklch(70.8% 0.093 273.4)
-
Step 500
500
#7383D1
oklch(63.1% 0.119 273.7)
-
Step 600
600
#5C6BBE
oklch(55.5% 0.129 273.7)
-
Step 700
700
#4C59A4
oklch(49.1% 0.12 273.7)
-
Step 800
800 (this color)
#404B87
oklch(43.4% 0.1 273.7)
-
Step 900
900
#353E6B
oklch(37.8% 0.078 273.6)
-
Step 950
950
#1F243E
oklch(26.9% 0.049 274.4)
#404B87 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) | #325289 | 0.024 |
| Deuteranopia (no green cones) | #2B4C86 | 0.026 |
| Tritanopia (no blue cones) | #225862 | 0.089 |
| Achromatopsia (no color) | #4F4F4F | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404B87
#404B87
oklch(43.4% 0.1 273.7)
- #614F00
#614F00
oklch(43.3% 0.089 93.7)
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 #404B87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.029
- Dusk Blue #26538D ΔE 0.034
- Dusk #4E5481 ΔE 0.038
- Blueberry #464196 ΔE 0.039
- Dark Slate Blue #483D8B ΔE 0.040
- Cobalt #1E488F ΔE 0.043
- Light Navy #155084 ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.045
Use #404B87 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.