#425188
Closest named color: Twilight (#4E518B). oklch(44.9% 0.092 270.8), rgb(66, 81, 136).
Aa
White text reads best on this color (7.59:1).
About this color
#425188 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.092 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.018 away. White text reads best on it, at 7.59:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.76:1 |
| White text | 7.59:1 |
Values
| HEX | #425188 |
| RGB | rgb(66, 81, 136) |
| HSL | hsl(227, 35%, 40%) |
| OKLCH | oklch(44.9% 0.092 270.8) |
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 #425188 | 7.59:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #425188 | 2.76:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #425188 text on white | 7.59:1 | AAA | Lc 86.3 | Fine for body text |
| #425188 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF5
oklch(93.7% 0.015 270)
-
Step 200
200
#D1D9EE
oklch(88.6% 0.03 269.1)
-
Step 300
300
#B3BFE4
oklch(80.8% 0.054 271)
-
Step 400
400
#8C9ED7
oklch(70.7% 0.086 270.6)
-
Step 500
500
#7185CC
oklch(63.1% 0.11 271)
-
Step 600
600
#596EB9
oklch(55.6% 0.119 270.4)
-
Step 700
700
#495BA0
oklch(49% 0.113 270.8)
-
Step 800
800 (this color)
#425188
oklch(44.9% 0.092 270.8)
-
Step 900
900
#333F68
oklch(37.7% 0.072 270.3)
-
Step 950
950
#1E253D
oklch(27% 0.046 270.7)
#425188 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) | #3C578A | 0.018 |
| Deuteranopia (no green cones) | #345187 | 0.018 |
| Tritanopia (no blue cones) | #255D66 | 0.082 |
| Achromatopsia (no color) | #545454 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425188
#425188
oklch(44.9% 0.092 270.8)
- #685200
#685200
oklch(44.8% 0.092 90.8)
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 #425188, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.018
- Dusk #4E5481 ΔE 0.024
- Denim Blue #3B5B92 ΔE 0.030
- Dusk Blue #26538D ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.032
- Dusky Blue #475F94 ΔE 0.043
- YInMn Blue #415A77 ΔE 0.044
- Light Navy #155084 ΔE 0.046
Use #425188 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.