#425C9C
Closest named color: Dusky Blue (#475F94). oklch(48.6% 0.108 265.9), rgb(66, 92, 156).
Aa
White text reads best on this color (6.47:1).
About this color
#425C9C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.108 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.018 away. White text reads best on it, at 6.47:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.24:1 |
| White text | 6.47:1 |
Values
| HEX | #425C9C |
| RGB | rgb(66, 92, 156) |
| HSL | hsl(223, 41%, 44%) |
| OKLCH | oklch(48.6% 0.108 265.9) |
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 #425C9C | 6.47:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #425C9C | 3.24:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #425C9C text on white | 6.47:1 | AA | Lc 82.0 | Fine for body text |
| #425C9C text on black | 3.24:1 | AA large text | Lc -19.9 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B1C1E3
oklch(81% 0.051 265.3)
-
Step 400
400
#88A0D5
oklch(70.7% 0.083 265.5)
-
Step 500
500
#6B87CA
oklch(63% 0.107 266.1)
-
Step 600
600
#5370B7
oklch(55.6% 0.116 266)
-
Step 700
700 (this color)
#425C9C
oklch(48.6% 0.108 265.9)
-
Step 800
800
#384D80
oklch(42.8% 0.089 265.9)
-
Step 900
900
#304067
oklch(37.7% 0.07 266.2)
-
Step 950
950
#1C263C
oklch(27.1% 0.044 265)
#425C9C 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) | #41629F | 0.017 |
| Deuteranopia (no green cones) | #365A9B | 0.016 |
| Tritanopia (no blue cones) | #026A74 | 0.097 |
| Achromatopsia (no color) | #5E5E5E | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425C9C
#425C9C
oklch(48.6% 0.108 265.9)
- #785A00
#785A00
oklch(48.5% 0.099 86)
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 #425C9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.018
- Denim Blue #3B5B92 ΔE 0.019
- Denim #3B638C ΔE 0.037
- Twilight #4E518B ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.041
- Dusk #4E5481 ΔE 0.046
- French Blue #436BAD ΔE 0.046
- Dusk Blue #26538D ΔE 0.048
Use #425C9C 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.