#405DCE
Closest named color: Warm Blue (#4B57DB). oklch(52.1% 0.178 268.6), rgb(64, 93, 206).
Aa
White text reads best on this color (5.71:1).
About this color
#405DCE is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.178 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.027 away. White text reads best on it, at 5.71:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.67:1 |
| White text | 5.71:1 |
Values
| HEX | #405DCE |
| RGB | rgb(64, 93, 206) |
| HSL | hsl(228, 59%, 53%) |
| OKLCH | oklch(52.1% 0.178 268.6) |
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 #405DCE | 5.71:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #405DCE | 3.67:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #405DCE text on white | 5.71:1 | AA | Lc 78.2 | Fine for body text |
| #405DCE text on black | 3.67:1 | AA large text | Lc -23.6 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9FA
oklch(88.6% 0.048 268.4)
-
Step 300
300
#A9BFF9
oklch(80.9% 0.086 268.4)
-
Step 400
400
#7D9BF6
oklch(70.6% 0.138 268.9)
-
Step 500
500
#5E80F3
oklch(63.2% 0.176 268.6)
-
Step 600
600
#4666E1
oklch(55.6% 0.19 268.5)
-
Step 700
700 (this color)
#405DCE
oklch(52.1% 0.178 268.6)
-
Step 800
800
#2E459E
oklch(42.6% 0.147 268.5)
-
Step 900
900
#293B7E
oklch(37.7% 0.115 269)
-
Step 950
950
#18234A
oklch(27% 0.074 269.2)
#405DCE 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) | #006DD2 | 0.048 |
| Deuteranopia (no green cones) | #0060CC | 0.038 |
| Tritanopia (no blue cones) | #00788C | 0.144 |
| Achromatopsia (no color) | #666666 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405DCE
#405DCE
oklch(52.1% 0.178 268.6)
- #826500
#826500
oklch(52.1% 0.106 88.9)
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 #405DCE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.027
- Royal Blue #4169E1 ΔE 0.040
- Iris #6258C4 ΔE 0.047
- Neon Blue #4361EE ΔE 0.050
- Dark Periwinkle #665FD1 ΔE 0.051
- Azul #1D5DEC ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.056
- Mid Blue #276AB3 ΔE 0.060
Use #405DCE 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.