#425E71
Closest named color: YInMn Blue (#415A77). oklch(46.8% 0.045 238.7), rgb(66, 94, 113).
Aa
White text reads best on this color (6.83:1).
About this color
#425E71 is a medium-dark, muted blue. In OKLCH its lightness is 47%, its chroma 0.045 and its hue 239°. 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 6.83:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #425E71 |
| RGB | rgb(66, 94, 113) |
| HSL | hsl(204, 26%, 35%) |
| OKLCH | oklch(46.8% 0.045 238.7) |
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 #425E71 | 6.83:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #425E71 | 3.07:1 | AA large text | Lc 20.5 | Dividers and decoration only |
| #425E71 text on white | 6.83:1 | AA | Lc 83.6 | Fine for body text |
| #425E71 text on black | 3.07:1 | AA large text | Lc -18.4 | 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 700.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D2DAE0
oklch(88.4% 0.012 239.9)
-
Step 300
300
#B4C3CD
oklch(80.9% 0.022 236.8)
-
Step 400
400
#8DA4B4
oklch(70.6% 0.035 238.4)
-
Step 500
500
#718EA2
oklch(63.2% 0.045 238.5)
-
Step 600
600
#59788D
oklch(55.7% 0.048 238.4)
-
Step 700
700 (this color)
#425E71
oklch(46.8% 0.045 238.7)
-
Step 800
800
#3C5262
oklch(42.7% 0.038 240.3)
-
Step 900
900
#334450
oklch(37.7% 0.03 239.3)
-
Step 950
950
#1E282F
oklch(27% 0.019 238.9)
#425E71 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) | #565D72 | 0.027 |
| Deuteranopia (no green cones) | #4F5871 | 0.024 |
| Tritanopia (no blue cones) | #316364 | 0.036 |
| Achromatopsia (no color) | #5B5B5B | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425E71
#425E71
oklch(46.8% 0.045 238.7)
- #6E5441
#6E5441
oklch(46.8% 0.045 57.5)
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 #425E71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.018
- Slate #516572 ΔE 0.031
- Dusty Grape #545775 ΔE 0.033
- Denim #3B638C ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.048
- Dusk #4E5481 ΔE 0.048
- Petrol #005F6A ΔE 0.049
- Dark Aqua #05696B ΔE 0.055
Use #425E71 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.