#4256AB
Closest named color: Denim Blue (#3B5B92). oklch(48.3% 0.137 270.5), rgb(66, 86, 171).
Aa
White text reads best on this color (6.66:1).
About this color
#4256AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.137 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.046 away. White text reads best on it, at 6.66:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.15:1 |
| White text | 6.66:1 |
Values
| HEX | #4256AB |
| RGB | rgb(66, 86, 171) |
| HSL | hsl(229, 44%, 46%) |
| OKLCH | oklch(48.3% 0.137 270.5) |
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 #4256AB | 6.66:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #4256AB | 3.15:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #4256AB text on white | 6.66:1 | AA | Lc 82.7 | Fine for body text |
| #4256AB text on black | 3.15:1 | AA large text | Lc -19.3 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5EAF7
oklch(93.7% 0.018 269.1)
-
Step 200
200
#D0D8F2
oklch(88.4% 0.037 272)
-
Step 300
300
#B0BFED
oklch(80.9% 0.067 270.7)
-
Step 400
400
#879DE3
oklch(70.7% 0.106 270.2)
-
Step 500
500
#6B83DB
oklch(63.1% 0.135 270.6)
-
Step 600
600
#536BC9
oklch(55.6% 0.148 270.2)
-
Step 700
700 (this color)
#4256AB
oklch(48.3% 0.137 270.5)
-
Step 800
800
#38498D
oklch(42.8% 0.114 270.4)
-
Step 900
900
#303D70
oklch(37.6% 0.089 270.9)
-
Step 950
950
#1C2442
oklch(26.9% 0.057 270.9)
#4256AB 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) | #2A61AE | 0.034 |
| Deuteranopia (no green cones) | #1558A9 | 0.039 |
| Tritanopia (no blue cones) | #006978 | 0.118 |
| Achromatopsia (no color) | #5C5C5C | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4256AB
#4256AB
oklch(48.3% 0.137 270.5)
- #745B00
#745B00
oklch(48.3% 0.099 90)
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 #4256AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.049
- Twilight #4E518B ΔE 0.053
- Mid Blue #276AB3 ΔE 0.055
- French Blue #436BAD ΔE 0.058
- Dusk Blue #26538D ΔE 0.060
- Blueberry #464196 ΔE 0.060
- Iris #6258C4 ΔE 0.061
Use #4256AB 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.