#425378
Closest named color: YInMn Blue (#415A77). oklch(44.4% 0.065 265), rgb(66, 83, 120).
Aa
White text reads best on this color (7.66:1).
About this color
#425378 is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.065 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.022 away. White text reads best on it, at 7.66:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.74:1 |
| White text | 7.66:1 |
Values
| HEX | #425378 |
| RGB | rgb(66, 83, 120) |
| HSL | hsl(221, 29%, 36%) |
| OKLCH | oklch(44.4% 0.065 265) |
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 #425378 | 7.66:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #425378 | 2.74:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #425378 text on white | 7.66:1 | AAA | Lc 86.6 | Fine for body text |
| #425378 text on black | 2.74:1 | Fails | Lc -15.5 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B5C1DA
oklch(81% 0.038 265.1)
-
Step 400
400
#8EA1C7
oklch(70.8% 0.06 264.1)
-
Step 500
500
#7289B9
oklch(63.1% 0.077 264.5)
-
Step 600
600
#5B72A5
oklch(55.5% 0.084 265.2)
-
Step 700
700
#4B608D
oklch(49.2% 0.077 264.6)
-
Step 800
800 (this color)
#425378
oklch(44.4% 0.065 265)
-
Step 900
900
#34415D
oklch(37.7% 0.051 264.9)
-
Step 950
950
#1F2636
oklch(26.9% 0.032 266.1)
#425378 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) | #46567A | 0.011 |
| Deuteranopia (no green cones) | #405177 | 0.007 |
| Tritanopia (no blue cones) | #2F5B60 | 0.059 |
| Achromatopsia (no color) | #535353 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425378
#425378
oklch(44.4% 0.065 265)
- #645126
#645126
oklch(44.5% 0.065 85.7)
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 #425378, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.022
- Dusk #4E5481 ΔE 0.024
- Dusty Grape #545775 ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.034
- Twilight #4E518B ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.044
- Dusk Blue #26538D ΔE 0.045
- Light Navy #155084 ΔE 0.050
Use #425378 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.