#404FB3
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(47.3% 0.158 272.4), rgb(64, 79, 179).
Aa
White text reads best on this color (7.02:1).
About this color
#404FB3 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.158 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.055 away. White text reads best on it, at 7.02:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 2.98:1 |
| White text | 7.02:1 |
Values
| HEX | #404FB3 |
| RGB | rgb(64, 79, 179) |
| HSL | hsl(232, 47%, 48%) |
| OKLCH | oklch(47.3% 0.158 272.4) |
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 #404FB3 | 7.02:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #404FB3 | 2.98:1 | Fails | Lc 20.0 | Dividers and decoration only |
| #404FB3 text on white | 7.02:1 | AAA | Lc 84.0 | Fine for body text |
| #404FB3 text on black | 2.98:1 | Fails | Lc -18.0 | 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
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CFD8F6
oklch(88.5% 0.042 272.3)
-
Step 300
300
#AFBEF3
oklch(80.9% 0.077 272.3)
-
Step 400
400
#879BED
oklch(70.8% 0.122 272.5)
-
Step 500
500
#6A80E7
oklch(63.2% 0.156 272.2)
-
Step 600
600
#5466D5
oklch(55.5% 0.17 272.7)
-
Step 700
700 (this color)
#404FB3
oklch(47.3% 0.158 272.4)
-
Step 800
800
#384696
oklch(42.8% 0.131 272.2)
-
Step 900
900
#303B77
oklch(37.6% 0.103 272.7)
-
Step 950
950
#1C2346
oklch(27% 0.065 272.8)
#404FB3 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) | #005EB6 | 0.051 |
| Deuteranopia (no green cones) | #0054B1 | 0.045 |
| Tritanopia (no blue cones) | #006779 | 0.133 |
| Achromatopsia (no color) | #595959 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404FB3
#404FB3
oklch(47.3% 0.158 272.4)
- #6F5900
#6F5900
oklch(47.3% 0.097 92.1)
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 #404FB3, 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 0.055
- Blueberry #464196 ΔE 0.056
- Blue Blue #2242C7 ΔE 0.057
- Majorelle Blue #3F37C9 ΔE 0.062
- Iris #6258C4 ΔE 0.062
- Bluey Purple #6241C7 ΔE 0.065
- Blurple #5539CC ΔE 0.065
- Denim Blue #3B5B92 ΔE 0.066
Use #404FB3 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.