#40586C
Closest named color: YInMn Blue (#415A77). oklch(44.9% 0.044 244.1), rgb(64, 88, 108).
Aa
White text reads best on this color (7.41:1).
About this color
#40586C is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.044 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.018 away. White text reads best on it, at 7.41:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.83:1 |
| White text | 7.41:1 |
Values
| HEX | #40586C |
| RGB | rgb(64, 88, 108) |
| HSL | hsl(207, 26%, 34%) |
| OKLCH | oklch(44.9% 0.044 244.1) |
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 #40586C | 7.41:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #40586C | 2.83:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #40586C text on white | 7.41:1 | AAA | Lc 85.7 | Fine for body text |
| #40586C text on black | 2.83:1 | Fails | Lc -16.3 | 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 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D2DAE2
oklch(88.5% 0.014 248)
-
Step 300
300
#B3C3D0
oklch(80.9% 0.025 242.4)
-
Step 400
400
#8BA4B9
oklch(70.7% 0.042 243.7)
-
Step 500
500
#6F8DA7
oklch(63% 0.052 244.9)
-
Step 600
600
#567793
oklch(55.5% 0.058 244.7)
-
Step 700
700
#46647D
oklch(49% 0.054 244.3)
-
Step 800
800 (this color)
#40586C
oklch(44.9% 0.044 244.1)
-
Step 900
900
#324453
oklch(37.8% 0.035 244)
-
Step 950
950
#1D2830
oklch(27% 0.021 240.1)
#40586C 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) | #50586D | 0.022 |
| Deuteranopia (no green cones) | #4A536C | 0.019 |
| Tritanopia (no blue cones) | #305D5F | 0.036 |
| Achromatopsia (no color) | #555555 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40586C
#40586C
oklch(44.9% 0.044 244.1)
- #67503B
#67503B
oklch(45% 0.045 63.7)
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 #40586C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.018
- Dusty Grape #545775 ΔE 0.033
- Dusk #4E5481 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.048
- Slate #516572 ΔE 0.048
- Petrol #005F6A ΔE 0.048
- Denim #3B638C ΔE 0.054
- Dark Slate Gray #2F4F4F ΔE 0.057
Use #40586C 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.