#405EC3
Closest named color: Warm Blue (#4B57DB). oklch(51.5% 0.162 267.9), rgb(64, 94, 195).
Aa
White text reads best on this color (5.82:1).
About this color
#405EC3 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.162 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.043 away. White text reads best on it, at 5.82:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.60:1 |
| White text | 5.82:1 |
Values
| HEX | #405EC3 |
| RGB | rgb(64, 94, 195) |
| HSL | hsl(226, 52%, 51%) |
| OKLCH | oklch(51.5% 0.162 267.9) |
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 #405EC3 | 5.82:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #405EC3 | 3.60:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #405EC3 text on white | 5.82:1 | AA | Lc 78.8 | Fine for body text |
| #405EC3 text on black | 3.60:1 | AA large text | Lc -23.0 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD9F7
oklch(88.6% 0.043 268.2)
-
Step 300
300
#ABBFF4
oklch(80.8% 0.078 268.5)
-
Step 400
400
#7F9DEF
oklch(70.8% 0.125 267.9)
-
Step 500
500
#6082E9
oklch(63.1% 0.159 267.9)
-
Step 600
600
#4869D8
oklch(55.7% 0.174 267.9)
-
Step 700
700 (this color)
#405EC3
oklch(51.5% 0.162 267.9)
-
Step 800
800
#304797
oklch(42.6% 0.134 268.2)
-
Step 900
900
#2A3D78
oklch(37.7% 0.103 267.8)
-
Step 950
950
#182446
oklch(26.9% 0.065 267.3)
#405EC3 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) | #1F6BC7 | 0.038 |
| Deuteranopia (no green cones) | #005FC1 | 0.039 |
| Tritanopia (no blue cones) | #007687 | 0.134 |
| Achromatopsia (no color) | #656565 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405EC3
#405EC3
oklch(51.5% 0.162 267.9)
- #816300
#816300
oklch(51.6% 0.105 87.8)
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 #405EC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.043
- Iris #6258C4 ΔE 0.046
- Mid Blue #276AB3 ΔE 0.047
- Royal Blue #4169E1 ΔE 0.052
- French Blue #436BAD ΔE 0.053
- Dark Periwinkle #665FD1 ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.059
- Light Indigo #6D5ACF ΔE 0.064
Use #405EC3 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.