#405BBF
Closest named color: Iris (#6258C4). oklch(50.6% 0.16 268.7), rgb(64, 91, 191).
Aa
White text reads best on this color (6.05:1).
About this color
#405BBF is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.160 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.047 away. White text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.46:1 |
| White text | 6.05:1 |
Values
| HEX | #405BBF |
| RGB | rgb(64, 91, 191) |
| HSL | hsl(227, 50%, 50%) |
| OKLCH | oklch(50.6% 0.16 268.7) |
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 #405BBF | 6.05:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #405BBF | 3.46:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #405BBF text on white | 6.05:1 | AA | Lc 79.9 | Fine for body text |
| #405BBF text on black | 3.46:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F6
oklch(88.5% 0.042 267.7)
-
Step 300
300
#ACBFF4
oklch(80.9% 0.078 269.3)
-
Step 400
400
#819DEE
oklch(70.8% 0.123 268.6)
-
Step 500
500
#6282E8
oklch(63.1% 0.157 268.5)
-
Step 600
600
#4A69D6
oklch(55.6% 0.171 268.4)
-
Step 700
700 (this color)
#405BBF
oklch(50.6% 0.16 268.7)
-
Step 800
800
#324796
oklch(42.6% 0.132 269)
-
Step 900
900
#2B3D78
oklch(37.8% 0.103 268.4)
-
Step 950
950
#192446
oklch(27% 0.065 268.3)
#405BBF 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) | #1B68C3 | 0.040 |
| Deuteranopia (no green cones) | #005DBD | 0.040 |
| Tritanopia (no blue cones) | #007384 | 0.133 |
| Achromatopsia (no color) | #626262 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405BBF
#405BBF
oklch(50.6% 0.16 268.7)
- #7D6100
#7D6100
oklch(50.7% 0.104 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 #405BBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.047
- Warm Blue #4B57DB ΔE 0.047
- Mid Blue #276AB3 ΔE 0.049
- French Blue #436BAD ΔE 0.056
- Dark Periwinkle #665FD1 ΔE 0.061
- Royal Blue #4169E1 ΔE 0.061
- Slate Blue #6A5ACD ΔE 0.062
- Light Indigo #6D5ACF ΔE 0.068
Use #405BBF 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.