#4259A4
Closest named color: Denim Blue (#3B5B92). oklch(48.4% 0.123 268.7), rgb(66, 89, 164).
Aa
White text reads best on this color (6.56:1).
About this color
#4259A4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.123 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.032 away. White text reads best on it, at 6.56:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.19:1 |
| White text | 6.56:1 |
Values
| HEX | #4259A4 |
| RGB | rgb(66, 89, 164) |
| HSL | hsl(226, 43%, 45%) |
| OKLCH | oklch(48.4% 0.123 268.7) |
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 #4259A4 | 6.56:1 | AA | Lc -87.4 | Fine for body text |
| Black text on #4259A4 | 3.19:1 | AA large text | Lc 21.7 | Dividers and decoration only |
| #4259A4 text on white | 6.56:1 | AA | Lc 82.3 | Fine for body text |
| #4259A4 text on black | 3.19:1 | AA large text | Lc -19.6 | 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
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F0
oklch(88.6% 0.033 268.7)
-
Step 300
300
#B0C0E8
oklch(80.9% 0.059 267.9)
-
Step 400
400
#889EDD
oklch(70.7% 0.096 269.1)
-
Step 500
500
#6B85D3
oklch(63.1% 0.122 268.8)
-
Step 600
600
#536DC1
oklch(55.5% 0.134 268.8)
-
Step 700
700 (this color)
#4259A4
oklch(48.4% 0.123 268.7)
-
Step 800
800
#384B87
oklch(42.8% 0.102 268.6)
-
Step 900
900
#303F6C
oklch(37.8% 0.08 268.5)
-
Step 950
950
#1C253F
oklch(27% 0.05 268.4)
#4259A4 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) | #3662A7 | 0.026 |
| Deuteranopia (no green cones) | #2859A2 | 0.027 |
| Tritanopia (no blue cones) | #006A76 | 0.109 |
| Achromatopsia (no color) | #5D5D5D | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4259A4
#4259A4
oklch(48.4% 0.123 268.7)
- #765B00
#765B00
oklch(48.5% 0.099 88.5)
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 #4259A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.032
- Dusky Blue #475F94 ΔE 0.034
- Twilight #4E518B ΔE 0.044
- French Blue #436BAD ΔE 0.050
- Mid Blue #276AB3 ΔE 0.050
- Dusk Blue #26538D ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.053
- Denim #3B638C ΔE 0.054
Use #4259A4 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.