#404BB9
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(47.1% 0.172 273.5), rgb(64, 75, 185).
Aa
White text reads best on this color (7.17:1).
About this color
#404BB9 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.172 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.044 away. White text reads best on it, at 7.17:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #404BB9 |
| RGB | rgb(64, 75, 185) |
| HSL | hsl(235, 49%, 49%) |
| OKLCH | oklch(47.1% 0.172 273.5) |
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 #404BB9 | 7.17:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #404BB9 | 2.92:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #404BB9 text on white | 7.17:1 | AAA | Lc 84.5 | Fine for body text |
| #404BB9 text on black | 2.92:1 | Fails | Lc -17.5 | 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 700.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#AFBDF7
oklch(80.8% 0.084 273.9)
-
Step 400
400
#8699F3
oklch(70.6% 0.133 273.5)
-
Step 500
500
#6A7DEF
oklch(63.1% 0.171 273.4)
-
Step 600
600
#5463DD
oklch(55.5% 0.185 273.5)
-
Step 700
700 (this color)
#404BB9
oklch(47.1% 0.172 273.5)
-
Step 800
800
#38439B
oklch(42.6% 0.143 273.4)
-
Step 900
900
#303A7B
oklch(37.7% 0.11 273.4)
-
Step 950
950
#1C2248
oklch(26.9% 0.07 274)
#404BB9 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) | #005DBD | 0.055 |
| Deuteranopia (no green cones) | #0052B7 | 0.046 |
| Tritanopia (no blue cones) | #00667A | 0.143 |
| Achromatopsia (no color) | #575757 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404BB9
#404BB9
oklch(47.1% 0.172 273.5)
- #6D5900
#6D5900
oklch(47% 0.096 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 #404BB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue With A Hint Of Purple #533CC6 ΔE 0.044
- Blue Blue #2242C7 ΔE 0.047
- Majorelle Blue #3F37C9 ΔE 0.048
- Blurple #5539CC ΔE 0.053
- Bluey Purple #6241C7 ΔE 0.058
- Blueberry #464196 ΔE 0.060
- Warm Blue #4B57DB ΔE 0.063
- Iris #6258C4 ΔE 0.064
Use #404BB9 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.