#425FA8
Closest named color: Dusky Blue (#475F94). oklch(50% 0.121 265.9), rgb(66, 95, 168).
Aa
White text reads best on this color (6.11:1).
About this color
#425FA8 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.121 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.033 away. White text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.43:1 |
| White text | 6.11:1 |
Values
| HEX | #425FA8 |
| RGB | rgb(66, 95, 168) |
| HSL | hsl(223, 44%, 46%) |
| OKLCH | oklch(50% 0.121 265.9) |
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 #425FA8 | 6.11:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #425FA8 | 3.43:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #425FA8 text on white | 6.11:1 | AA | Lc 80.3 | Fine for body text |
| #425FA8 text on black | 3.43:1 | AA large text | Lc -21.5 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CFD9EF
oklch(88.4% 0.032 266.1)
-
Step 300
300
#AFC0E8
oklch(80.8% 0.06 267)
-
Step 400
400
#859FDC
oklch(70.6% 0.095 266.3)
-
Step 500
500
#6786D2
oklch(63% 0.12 266.2)
-
Step 600
600
#4F6FBF
oklch(55.6% 0.13 265.9)
-
Step 700
700 (this color)
#425FA8
oklch(50% 0.121 265.9)
-
Step 800
800
#354C86
oklch(42.8% 0.1 266)
-
Step 900
900
#2E406B
oklch(37.8% 0.077 265.7)
-
Step 950
950
#1B253F
oklch(26.9% 0.051 267)
#425FA8 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) | #3E67AB | 0.022 |
| Deuteranopia (no green cones) | #305EA6 | 0.020 |
| Tritanopia (no blue cones) | #006F7B | 0.105 |
| Achromatopsia (no color) | #626262 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425FA8
#425FA8
oklch(50% 0.121 265.9)
- #7D5E00
#7D5E00
oklch(50% 0.102 86.1)
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 #425FA8, closest first.
No curated palette has a color within ΔE 0.04 of #425FA8.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.033
- French Blue #436BAD ΔE 0.033
- Mid Blue #276AB3 ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.037
- Denim #3B638C ΔE 0.050
- Twilight #4E518B ΔE 0.055
- Muted Blue #3B719F ΔE 0.056
- Flat Blue #3C73A8 ΔE 0.057
Use #425FA8 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.