#3351AF
Closest named color: Blue Blue (#2242C7). oklch(46.7% 0.154 266.9), rgb(51, 81, 175).
Aa
White text reads best on this color (7.15:1).
About this color
#3351AF is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.154 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.056 away. White text reads best on it, at 7.15:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.93:1 |
| White text | 7.15:1 |
Values
| HEX | #3351AF |
| RGB | rgb(51, 81, 175) |
| HSL | hsl(225, 55%, 44%) |
| OKLCH | oklch(46.7% 0.154 266.9) |
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 #3351AF | 7.15:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #3351AF | 2.93:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #3351AF text on white | 7.15:1 | AAA | Lc 84.4 | Fine for body text |
| #3351AF text on black | 2.93:1 | Fails | Lc -17.6 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ABC0F2
oklch(80.9% 0.075 267)
-
Step 400
400
#7F9EEB
oklch(70.8% 0.119 266.7)
-
Step 500
500
#6083E5
oklch(63.1% 0.153 267.2)
-
Step 600
600
#476BD3
oklch(55.7% 0.165 266.7)
-
Step 700
700 (this color)
#3351AF
oklch(46.7% 0.154 266.9)
-
Step 800
800
#2F4994
oklch(42.8% 0.127 266.6)
-
Step 900
900
#2A3E76
oklch(37.8% 0.099 266.9)
-
Step 950
950
#182445
oklch(26.9% 0.064 267)
#3351AF 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) | #0C5EB2 | 0.038 |
| Deuteranopia (no green cones) | #0052AD | 0.031 |
| Tritanopia (no blue cones) | #006878 | 0.125 |
| Achromatopsia (no color) | #585858 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3351AF
#3351AF
oklch(46.7% 0.154 266.9)
- #715600
#715600
oklch(46.8% 0.096 87.4)
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 #3351AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.056
- Blueberry #464196 ΔE 0.057
- Dusk Blue #26538D ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.059
- Cobalt #1E488F ΔE 0.062
- Mid Blue #276AB3 ΔE 0.066
- Twilight #4E518B ΔE 0.067
- Sapphire #2138AB ΔE 0.067
Use #3351AF 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.