#425B91
Closest named color: Denim Blue (#3B5B92). oklch(47.7% 0.093 264.3), rgb(66, 91, 145).
Aa
White text reads best on this color (6.69:1).
About this color
#425B91 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.093 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.008 away. White text reads best on it, at 6.69:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.13:1 |
| White text | 6.69:1 |
Values
| HEX | #425B91 |
| RGB | rgb(66, 91, 145) |
| HSL | hsl(221, 37%, 41%) |
| OKLCH | oklch(47.7% 0.093 264.3) |
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 #425B91 | 6.69:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #425B91 | 3.13:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #425B91 text on white | 6.69:1 | AA | Lc 82.9 | Fine for body text |
| #425B91 text on black | 3.13:1 | AA large text | Lc -19.0 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B2C1DE
oklch(80.9% 0.044 263.6)
-
Step 400
400
#8AA1CE
oklch(70.8% 0.071 263.6)
-
Step 500
500
#6D89C1
oklch(63.1% 0.091 263.6)
-
Step 600
600
#5672AE
oklch(55.7% 0.099 264.4)
-
Step 700
700 (this color)
#425B91
oklch(47.7% 0.093 264.3)
-
Step 800
800
#3A4E79
oklch(42.8% 0.076 264.4)
-
Step 900
900
#314162
oklch(37.7% 0.061 264)
-
Step 950
950
#1D2639
oklch(27% 0.038 264.5)
#425B91 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) | #466093 | 0.016 |
| Deuteranopia (no green cones) | #3C5990 | 0.010 |
| Tritanopia (no blue cones) | #19676F | 0.084 |
| Achromatopsia (no color) | #5C5C5C | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425B91
#425B91
oklch(47.7% 0.093 264.3)
- #75580D
#75580D
oklch(47.8% 0.093 84.9)
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 #425B91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.008
- Dusky Blue #475F94 ΔE 0.014
- Denim #3B638C ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.028
- Twilight #4E518B ΔE 0.030
- Dusk #4E5481 ΔE 0.031
- Dusk Blue #26538D ΔE 0.041
- YInMn Blue #415A77 ΔE 0.043
Use #425B91 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.