#425F8D
Closest named color: Dusky Blue (#475F94). oklch(48.4% 0.082 259.3), rgb(66, 95, 141).
Aa
White text reads best on this color (6.45:1).
About this color
#425F8D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.082 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.013 away. White text reads best on it, at 6.45:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.25:1 |
| White text | 6.45:1 |
Values
| HEX | #425F8D |
| RGB | rgb(66, 95, 141) |
| HSL | hsl(217, 36%, 41%) |
| OKLCH | oklch(48.4% 0.082 259.3) |
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 #425F8D | 6.45:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #425F8D | 3.25:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #425F8D text on white | 6.45:1 | AA | Lc 81.9 | Fine for body text |
| #425F8D text on black | 3.25:1 | AA large text | Lc -20.0 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D1DAE8
oklch(88.6% 0.022 259.2)
-
Step 300
300
#B2C2DB
oklch(81% 0.04 259.3)
-
Step 400
400
#89A2C9
oklch(70.7% 0.064 259.2)
-
Step 500
500
#6C8ABB
oklch(63% 0.082 260)
-
Step 600
600
#5474A7
oklch(55.7% 0.088 259.4)
-
Step 700
700 (this color)
#425F8D
oklch(48.4% 0.082 259.3)
-
Step 800
800
#384F74
oklch(42.6% 0.068 259.6)
-
Step 900
900
#30425E
oklch(37.7% 0.054 259)
-
Step 950
950
#1D2737
oklch(27.1% 0.033 259.6)
#425F8D 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) | #4D628F | 0.018 |
| Deuteranopia (no green cones) | #445B8C | 0.011 |
| Tritanopia (no blue cones) | #1D696F | 0.074 |
| Achromatopsia (no color) | #5E5E5E | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425F8D
#425F8D
oklch(48.4% 0.082 259.3)
- #775921
#775921
oklch(48.4% 0.082 80)
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 #425F8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.013
- Denim #3B638C ΔE 0.014
- Denim Blue #3B5B92 ΔE 0.018
- Light Navy Blue #2E5A88 ΔE 0.029
- Dusk #4E5481 ΔE 0.035
- YInMn Blue #415A77 ΔE 0.036
- Twilight #4E518B ΔE 0.041
- Peacock Blue #016795 ΔE 0.043
Use #425F8D 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.