#404E88
Closest named color: Twilight (#4E518B). oklch(44.1% 0.097 271.7), rgb(64, 78, 136).
Aa
White text reads best on this color (7.88:1).
About this color
#404E88 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.097 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.023 away. White text reads best on it, at 7.88:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #404E88 |
| RGB | rgb(64, 78, 136) |
| HSL | hsl(228, 36%, 39%) |
| OKLCH | oklch(44.1% 0.097 271.7) |
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 #404E88 | 7.88:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #404E88 | 2.66:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #404E88 text on white | 7.88:1 | AAA | Lc 87.2 | Fine for body text |
| #404E88 text on black | 2.66:1 | Fails | Lc -14.9 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D1D8EF
oklch(88.4% 0.033 272.2)
-
Step 300
300
#B3BFE6
oklch(80.8% 0.057 271.7)
-
Step 400
400
#8C9DDA
oklch(70.6% 0.092 271.9)
-
Step 500
500
#7184D0
oklch(63.1% 0.117 272)
-
Step 600
600
#5A6DBD
oklch(55.7% 0.126 271.7)
-
Step 700
700
#4A5AA3
oklch(49.1% 0.118 272.1)
-
Step 800
800 (this color)
#404E88
oklch(44.1% 0.097 271.7)
-
Step 900
900
#333E6A
oklch(37.6% 0.077 271.7)
-
Step 950
950
#1E253E
oklch(27.1% 0.048 271.1)
#404E88 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) | #37558A | 0.021 |
| Deuteranopia (no green cones) | #2F4F87 | 0.021 |
| Tritanopia (no blue cones) | #205A64 | 0.086 |
| Achromatopsia (no color) | #515151 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404E88
#404E88
oklch(44.1% 0.097 271.7)
- #655000
#655000
oklch(44% 0.09 91.3)
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 #404E88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.023
- Dusk Blue #26538D ΔE 0.030
- Dusk #4E5481 ΔE 0.032
- Denim Blue #3B5B92 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.038
- Light Navy #155084 ΔE 0.043
- Blueberry #464196 ΔE 0.045
- Cobalt #1E488F ΔE 0.046
Use #404E88 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.