#405EB3
Closest named color: Mid Blue (#276AB3). oklch(50.4% 0.139 266.8), rgb(64, 94, 179).
Aa
White text reads best on this color (6.05:1).
About this color
#405EB3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.139 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.036 away. White text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.47:1 |
| White text | 6.05:1 |
Values
| HEX | #405EB3 |
| RGB | rgb(64, 94, 179) |
| HSL | hsl(224, 47%, 48%) |
| OKLCH | oklch(50.4% 0.139 266.8) |
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 #405EB3 | 6.05:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #405EB3 | 3.47:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #405EB3 text on white | 6.05:1 | AA | Lc 80.0 | Fine for body text |
| #405EB3 text on black | 3.47:1 | AA large text | Lc -21.9 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F3
oklch(88.5% 0.038 267.3)
-
Step 300
300
#ADC0ED
oklch(80.9% 0.067 267)
-
Step 400
400
#829EE4
oklch(70.6% 0.108 267)
-
Step 500
500
#6385DC
oklch(63.1% 0.137 266.4)
-
Step 600
600
#4B6DCA
oklch(55.7% 0.149 266.5)
-
Step 700
700 (this color)
#405EB3
oklch(50.4% 0.139 266.8)
-
Step 800
800
#324A8D
oklch(42.6% 0.115 266.7)
-
Step 900
900
#2C3E71
oklch(37.6% 0.09 267.3)
-
Step 950
950
#1A2542
oklch(27% 0.056 266.9)
#405EB3 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) | #3368B6 | 0.027 |
| Deuteranopia (no green cones) | #1D5EB1 | 0.030 |
| Tritanopia (no blue cones) | #007280 | 0.118 |
| Achromatopsia (no color) | #636363 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405EB3
#405EB3
oklch(50.4% 0.139 266.8)
- #7E5F00
#7E5F00
oklch(50.3% 0.103 86.3)
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 #405EB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.036
- French Blue #436BAD ΔE 0.039
- Dusky Blue #475F94 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.053
- Iris #6258C4 ΔE 0.055
- Flat Blue #3C73A8 ΔE 0.064
- Warm Blue #4B57DB ΔE 0.067
- Muted Blue #3B719F ΔE 0.068
Use #405EB3 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.