#424D65
Closest named color: YInMn Blue (#415A77). oklch(42.1% 0.043 265.5), rgb(66, 77, 101).
Aa
White text reads best on this color (8.46:1).
About this color
#424D65 is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.043 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.043 away. White text reads best on it, at 8.46:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.48:1 |
| White text | 8.46:1 |
Values
| HEX | #424D65 |
| RGB | rgb(66, 77, 101) |
| HSL | hsl(221, 21%, 33%) |
| OKLCH | oklch(42.1% 0.043 265.5) |
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 #424D65 | 8.46:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #424D65 | 2.48:1 | Fails | Lc 14.8 | Not readable |
| #424D65 text on white | 8.46:1 | AAA | Lc 89.1 | Fine for body text |
| #424D65 text on black | 2.48:1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D5D9E3
oklch(88.5% 0.014 268.5)
-
Step 300
300
#B9C1D1
oklch(81% 0.024 264.4)
-
Step 400
400
#95A1BA
oklch(70.8% 0.039 265)
-
Step 500
500
#7B89A9
oklch(63% 0.051 266.4)
-
Step 600
600
#647394
oklch(55.6% 0.055 265.6)
-
Step 700
700
#53607F
oklch(49.1% 0.053 266.8)
-
Step 800
800 (this color)
#424D65
oklch(42.1% 0.043 265.5)
-
Step 900
900
#394154
oklch(37.6% 0.034 266.9)
-
Step 950
950
#212631
oklch(26.9% 0.022 265.8)
#424D65 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) | #454F66 | 0.008 |
| Deuteranopia (no green cones) | #424C64 | 0.003 |
| Tritanopia (no blue cones) | #385255 | 0.039 |
| Achromatopsia (no color) | #4D4D4D | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424D65
#424D65
oklch(42.1% 0.043 265.5)
- #584C32
#584C32
oklch(42.2% 0.043 85.8)
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 #424D65, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.045
- Dusty Grape #545775 ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.049
- Dusk #4E5481 ΔE 0.052
- Charcoal #264653 ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.063
- Charcoal Grey #3C4142 ΔE 0.063
Use #424D65 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.