#3451A4
Closest named color: Dusk Blue (#26538D). oklch(45.9% 0.138 266.5), rgb(52, 81, 164).
Aa
White text reads best on this color (7.34:1).
About this color
#3451A4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.138 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.042 away. White text reads best on it, at 7.34:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.85:1 |
| White text | 7.34:1 |
Values
| HEX | #3451A4 |
| RGB | rgb(52, 81, 164) |
| HSL | hsl(224, 52%, 42%) |
| OKLCH | oklch(45.9% 0.138 266.5) |
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 #3451A4 | 7.34:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #3451A4 | 2.85:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #3451A4 text on white | 7.34:1 | AAA | Lc 85.2 | Fine for body text |
| #3451A4 text on black | 2.85:1 | Fails | Lc -16.8 | 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 700.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F3
oklch(88.5% 0.038 267.3)
-
Step 300
300
#ADC0ED
oklch(80.9% 0.067 267)
-
Step 400
400
#829FE4
oklch(70.8% 0.107 266.3)
-
Step 500
500
#6385DC
oklch(63.1% 0.137 266.4)
-
Step 600
600
#4B6DCA
oklch(55.7% 0.149 266.5)
-
Step 700
700 (this color)
#3451A4
oklch(45.9% 0.138 266.5)
-
Step 800
800
#324A8D
oklch(42.6% 0.115 266.7)
-
Step 900
900
#2C3F71
oklch(37.8% 0.089 266.5)
-
Step 950
950
#1A2542
oklch(27% 0.056 266.9)
#3451A4 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) | #225BA7 | 0.028 |
| Deuteranopia (no green cones) | #0051A2 | 0.034 |
| Tritanopia (no blue cones) | #006473 | 0.112 |
| Achromatopsia (no color) | #565656 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3451A4
#3451A4
oklch(45.9% 0.138 266.5)
- #6F5300
#6F5300
oklch(45.9% 0.094 85.9)
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 #3451A4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.045
- Blueberry #464196 ΔE 0.048
- Cobalt #1E488F ΔE 0.049
- Twilight #4E518B ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.057
- Dusky Blue #475F94 ΔE 0.058
- Light Navy #155084 ΔE 0.061
Use #3451A4 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.