#425571
Closest named color: YInMn Blue (#415A77). oklch(44.6% 0.052 257.9), rgb(66, 85, 113).
Aa
White text reads best on this color (7.58:1).
About this color
#425571 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.052 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.016 away. White text reads best on it, at 7.58:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #425571 |
| RGB | rgb(66, 85, 113) |
| HSL | hsl(216, 26%, 35%) |
| OKLCH | oklch(44.6% 0.052 257.9) |
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 #425571 | 7.58:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #425571 | 2.76:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #425571 text on white | 7.58:1 | AAA | Lc 86.3 | Fine for body text |
| #425571 text on black | 2.76:1 | Fails | Lc -15.8 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE5
oklch(88.6% 0.017 256.3)
-
Step 300
300
#B5C2D5
oklch(81% 0.03 257.8)
-
Step 400
400
#8EA2BF
oklch(70.7% 0.048 257.6)
-
Step 500
500
#728BAF
oklch(63.1% 0.062 257.5)
-
Step 600
600
#5A759B
oklch(55.7% 0.067 257)
-
Step 700
700
#4A6284
oklch(49.1% 0.062 257.1)
-
Step 800
800 (this color)
#425571
oklch(44.6% 0.052 257.9)
-
Step 900
900
#344257
oklch(37.6% 0.041 258.3)
-
Step 950
950
#1F2733
oklch(27.1% 0.025 258.3)
#425571 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) | #4B5672 | 0.013 |
| Deuteranopia (no green cones) | #465270 | 0.010 |
| Tritanopia (no blue cones) | #325B5F | 0.045 |
| Achromatopsia (no color) | #545454 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425571
#425571
oklch(44.6% 0.052 257.9)
- #645132
#645132
oklch(44.6% 0.052 79)
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 #425571, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.016
- Dusty Grape #545775 ΔE 0.028
- Dusk #4E5481 ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.041
- Twilight #4E518B ΔE 0.051
- Denim #3B638C ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.053
- Slate #516572 ΔE 0.056
Use #425571 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.