#405B88
Closest named color: Denim Blue (#3B5B92). oklch(47% 0.08 260.2), rgb(64, 91, 136).
Aa
White text reads best on this color (6.84:1).
About this color
#405B88 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.080 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.017 away. White text reads best on it, at 6.84:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.06:1 |
| White text | 6.84:1 |
Values
| HEX | #405B88 |
| RGB | rgb(64, 91, 136) |
| HSL | hsl(218, 36%, 39%) |
| OKLCH | oklch(47% 0.08 260.2) |
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 #405B88 | 6.84:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #405B88 | 3.06:1 | AA large text | Lc 20.5 | Dividers and decoration only |
| #405B88 text on white | 6.84:1 | AA | Lc 83.5 | Fine for body text |
| #405B88 text on black | 3.06:1 | AA large text | Lc -18.4 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1DAE8
oklch(88.6% 0.022 259.2)
-
Step 300
300
#B2C2DA
oklch(81% 0.038 258.4)
-
Step 400
400
#8AA2C8
oklch(70.7% 0.062 259.5)
-
Step 500
500
#6D8ABA
oklch(63% 0.08 260.3)
-
Step 600
600
#5574A6
oklch(55.7% 0.086 259.7)
-
Step 700
700 (this color)
#405B88
oklch(47% 0.08 260.2)
-
Step 800
800
#394F73
oklch(42.6% 0.066 259.9)
-
Step 900
900
#31425D
oklch(37.7% 0.052 259.4)
-
Step 950
950
#1D2737
oklch(27.1% 0.033 259.6)
#405B88 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) | #495E8A | 0.016 |
| Deuteranopia (no green cones) | #415787 | 0.012 |
| Tritanopia (no blue cones) | #1D656B | 0.072 |
| Achromatopsia (no color) | #5B5B5B | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #405B88
#405B88
oklch(47% 0.08 260.2)
- #72551F
#72551F
oklch(46.9% 0.08 79.9)
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 #405B88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.017
- Light Navy Blue #2E5A88 ΔE 0.020
- Denim #3B638C ΔE 0.023
- Dusky Blue #475F94 ΔE 0.024
- Dusk #4E5481 ΔE 0.026
- YInMn Blue #415A77 ΔE 0.028
- Twilight #4E518B ΔE 0.034
- Dusty Grape #545775 ΔE 0.038
Use #405B88 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.