#425579
Closest named color: YInMn Blue (#415A77). oklch(45% 0.064 262.7), rgb(66, 85, 121).
Aa
White text reads best on this color (7.48:1).
About this color
#425579 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.064 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.017 away. White text reads best on it, at 7.48:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.80:1 |
| White text | 7.48:1 |
Values
| HEX | #425579 |
| RGB | rgb(66, 85, 121) |
| HSL | hsl(219, 29%, 37%) |
| OKLCH | oklch(45% 0.064 262.7) |
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 #425579 | 7.48:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #425579 | 2.80:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #425579 text on white | 7.48:1 | AAA | Lc 85.9 | Fine for body text |
| #425579 text on black | 2.80:1 | Fails | Lc -16.1 | 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
#D2D9E7
oklch(88.4% 0.021 264.5)
-
Step 300
300
#B4C1DA
oklch(80.9% 0.038 263.6)
-
Step 400
400
#8DA1C7
oklch(70.7% 0.06 263.1)
-
Step 500
500
#718AB8
oklch(63.2% 0.075 262.3)
-
Step 600
600
#5973A4
oklch(55.6% 0.083 262.5)
-
Step 700
700
#49608D
oklch(49.1% 0.078 263.1)
-
Step 800
800 (this color)
#425579
oklch(45% 0.064 262.7)
-
Step 900
900
#33425C
oklch(37.8% 0.049 261.1)
-
Step 950
950
#1E2636
oklch(26.9% 0.032 263.8)
#425579 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) | #48587B | 0.013 |
| Deuteranopia (no green cones) | #425278 | 0.009 |
| Tritanopia (no blue cones) | #2E5D62 | 0.057 |
| Achromatopsia (no color) | #555555 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425579
#425579
oklch(45% 0.064 262.7)
- #675229
#675229
oklch(45.1% 0.064 82.6)
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 #425579, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.017
- Dusk #4E5481 ΔE 0.023
- Dusty Grape #545775 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.031
- Twilight #4E518B ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.041
- Denim #3B638C ΔE 0.045
- Dusk Blue #26538D ΔE 0.046
Use #425579 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.