#405FCC
Closest named color: Warm Blue (#4B57DB). oklch(52.4% 0.173 268), rgb(64, 95, 204).
Aa
White text reads best on this color (5.63:1).
About this color
#405FCC is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.173 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.032 away. White text reads best on it, at 5.63:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.72:1 |
| White text | 5.63:1 |
Values
| HEX | #405FCC |
| RGB | rgb(64, 95, 204) |
| HSL | hsl(227, 58%, 53%) |
| OKLCH | oklch(52.4% 0.173 268) |
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 #405FCC | 5.63:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #405FCC | 3.72:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #405FCC text on white | 5.63:1 | AA | Lc 77.8 | Fine for body text |
| #405FCC text on black | 3.72:1 | AA large text | Lc -24.0 | 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 600.
-
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
#7F9DEE
oklch(70.7% 0.124 267.7)
-
Step 500
500
#6082E9
oklch(63.1% 0.159 267.9)
-
Step 600
600 (this color)
#405FCC
oklch(52.4% 0.173 268)
-
Step 700
700
#3A57BA
oklch(49.1% 0.16 267.8)
-
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
#192446
oklch(27% 0.065 268.3)
#405FCC 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) | #0E6ED0 | 0.044 |
| Deuteranopia (no green cones) | #0061CA | 0.038 |
| Tritanopia (no blue cones) | #00798C | 0.141 |
| Achromatopsia (no color) | #676767 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405FCC
#405FCC
oklch(52.4% 0.173 268)
- #846500
#846500
oklch(52.3% 0.107 87.5)
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 #405FCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.032
- Royal Blue #4169E1 ΔE 0.040
- Iris #6258C4 ΔE 0.046
- Dark Periwinkle #665FD1 ΔE 0.050
- Neon Blue #4361EE ΔE 0.052
- Mid Blue #276AB3 ΔE 0.055
- Azul #1D5DEC ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.056
Use #405FCC 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.