#40458F
Closest named color: Blueberry (#464196). oklch(42.6% 0.12 277.1), rgb(64, 69, 143).
Aa
White text reads best on this color (8.51:1).
About this color
#40458F is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.120 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.018 away. White text reads best on it, at 8.51:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.46:1 |
| White text | 8.51:1 |
Values
| HEX | #40458F |
| RGB | rgb(64, 69, 143) |
| HSL | hsl(236, 38%, 41%) |
| OKLCH | oklch(42.6% 0.12 277.1) |
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 #40458F | 8.51:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #40458F | 2.46:1 | Fails | Lc 14.9 | Not readable |
| #40458F text on white | 8.51:1 | AAA | Lc 89.1 | Fine for body text |
| #40458F text on black | 2.46:1 | Fails | Lc -13.1 | Not readable |
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 800.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D2D7F3
oklch(88.4% 0.039 277.6)
-
Step 300
300
#B5BDEE
oklch(80.9% 0.07 277.5)
-
Step 400
400
#8F9AE6
oklch(70.8% 0.112 276.9)
-
Step 500
500
#757FDF
oklch(63.2% 0.143 277)
-
Step 600
600
#5F66CC
oklch(55.6% 0.155 277.1)
-
Step 700
700
#4E54B1
oklch(49.1% 0.145 276.8)
-
Step 800
800 (this color)
#40458F
oklch(42.6% 0.12 277.1)
-
Step 900
900
#363B72
oklch(37.7% 0.093 277)
-
Step 950
950
#1F2343
oklch(27% 0.059 276.3)
#40458F 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) | #205092 | 0.042 |
| Deuteranopia (no green cones) | #15498D | 0.045 |
| Tritanopia (no blue cones) | #1B5563 | 0.105 |
| Achromatopsia (no color) | #4D4D4D | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40458F
#40458F
oklch(42.6% 0.12 277.1)
- #5C4E00
#5C4E00
oklch(42.5% 0.088 97.2)
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 #40458F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.018
- Dark Slate Blue #483D8B ΔE 0.023
- Cobalt #1E488F ΔE 0.039
- Twilight #4E518B ΔE 0.043
- Dusk Blue #26538D ΔE 0.046
- Light Navy #155084 ΔE 0.055
- Dusk #4E5481 ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.061
Use #40458F 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.