#405CC6
Closest named color: Warm Blue (#4B57DB). oklch(51.3% 0.168 268.7), rgb(64, 92, 198).
Aa
White text reads best on this color (5.89:1).
About this color
#405CC6 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.168 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.037 away. White text reads best on it, at 5.89:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.56:1 |
| White text | 5.89:1 |
Values
| HEX | #405CC6 |
| RGB | rgb(64, 92, 198) |
| HSL | hsl(227, 54%, 51%) |
| OKLCH | oklch(51.3% 0.168 268.7) |
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 #405CC6 | 5.89:1 | AA | Lc -84.3 | Fine for body text |
| Black text on #405CC6 | 3.56:1 | AA large text | Lc 25.0 | Dividers and decoration only |
| #405CC6 text on white | 5.89:1 | AA | Lc 79.1 | Fine for body text |
| #405CC6 text on black | 3.56:1 | AA large text | Lc -22.7 | 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
#CDD9F8
oklch(88.6% 0.045 268.7)
-
Step 300
300
#ABBFF6
oklch(80.9% 0.081 269)
-
Step 400
400
#7F9CF2
oklch(70.7% 0.13 268.8)
-
Step 500
500
#6081ED
oklch(63.1% 0.166 268.6)
-
Step 600
600
#4867DB
oklch(55.5% 0.181 268.6)
-
Step 700
700 (this color)
#405CC6
oklch(51.3% 0.168 268.7)
-
Step 800
800
#30469A
oklch(42.6% 0.14 268.7)
-
Step 900
900
#2A3C7A
oklch(37.7% 0.108 268.6)
-
Step 950
950
#192448
oklch(27.1% 0.068 268.7)
#405CC6 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) | #0F6BCA | 0.045 |
| Deuteranopia (no green cones) | #005EC4 | 0.039 |
| Tritanopia (no blue cones) | #007588 | 0.137 |
| Achromatopsia (no color) | #646464 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405CC6
#405CC6
oklch(51.3% 0.168 268.7)
- #806300
#806300
oklch(51.4% 0.105 88.5)
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 #405CC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.037
- Iris #6258C4 ΔE 0.045
- Royal Blue #4169E1 ΔE 0.051
- Mid Blue #276AB3 ΔE 0.053
- Dark Periwinkle #665FD1 ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.058
- French Blue #436BAD ΔE 0.061
- Neon Blue #4361EE ΔE 0.063
Use #405CC6 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.